91.2 is what percent of 104 - 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 104 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 104, so we can write it down as 100%=104.
4. We know, that x% equals 91.2 of the output value, so we can write it down as x%=91.2.
5. Now we have two simple equations:
1) 100%=104
2) x%=91.2
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%=104/91.2
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 91.2 is what percent of 104

100%/x%=104/91.2
(100/x)*x=(104/91.2)*x       - we multiply both sides of the equation by x
100=1.140350877193*x       - we divide both sides of the equation by (1.140350877193) to get x
100/1.140350877193=x
87.692307692308=x
x=87.692307692308

now we have:
91.2 is 87.692307692308% of 104