*Calculator or tool that uses the percentage formula to solve for a desired value in that formula. If any two of the variables are known, the third variable can be calculated.Formula used to solve percentage problems that relates two ratios where one of the ratios is a part or portion per 100 and the other ratio is a part or portion per a whole.*

*Calculator or tool that uses the percentage formula to solve for a desired value in that formula. If any two of the variables are known, the third variable can be calculated.Formula used to solve percentage problems that relates two ratios where one of the ratios is a part or portion per 100 and the other ratio is a part or portion per a whole.*

Percents and Decimals are just tools that let us represent numbers, and that is why percents can be converted into decimals, and decimals can be converted into percents.

In this tutorial you'll see how quickly you can convert percents into decimals!

For example, “75 percent” is another way of saying “75 parts per 100.” To calculate a percentage, the whole amount must be known, in addition to the percentage or portion amount.

The question may be “what percentage of W is P,” where W is the whole amount and P is the portion amount.

We can divide both sides of this equation by 0.25, or if you recognize that four quarters make a dollar, you could say, let's multiply both sides of this equation by 4. I'll do the first, because that's how we normally do algebra problems like this. And the reason why I wanted to is really it's just good practice dividing by a decimal. So we want to figure out what 150 divided by 0.25 is. When you divide by a decimal, what you can do is you can make the number that you're dividing into the other number, you can turn this into a whole number by essentially shifting the decimal two to the right.

And then the right-hand side will be 150 divided by 0.25.

4 times 0.25 is the same thing as 4 times 1/4, which is a whole.

And you might have been able to do that in your head, because when we were at this point in our equation, 0.25x is equal to 150, you could have just multiplied both sides of this equation times 4. It should be a lot smaller than that number, and it is.

Want to know how to find percentages quickly without the use of a calculator? This free video math lesson will show you how it's done.

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts.

## Comments Solving Percent Problems Using Proportions Calculator

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