87 is what percent of 134.2 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 134.2 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 134.2, so we can write it down as 100%=134.2.
4. We know, that x% equals 87 of the output value, so we can write it down as x%=87.
5. Now we have two simple equations:
1) 100%=134.2
2) x%=87
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=134.2/87
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 87 is what percent of 134.2

100%/x%=134.2/87
(100/x)*x=(134.2/87)*x       - we multiply both sides of the equation by x
100=1.5425287356322*x       - we divide both sides of the equation by (1.5425287356322) to get x
100/1.5425287356322=x
64.828614008942=x
x=64.828614008942

now we have:
87 is 64.828614008942% of 134.2