7.5 is what percent of 4.78 - 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 4.78 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 4.78, so we can write it down as 100%=4.78.
4. We know, that x% equals 7.5 of the output value, so we can write it down as x%=7.5.
5. Now we have two simple equations:
1) 100%=4.78
2) x%=7.5
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%=4.78/7.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 7.5 is what percent of 4.78

100%/x%=4.78/7.5
(100/x)*x=(4.78/7.5)*x       - we multiply both sides of the equation by x
100=0.63733333333333*x       - we divide both sides of the equation by (0.63733333333333) to get x
100/0.63733333333333=x
156.90376569038=x
x=156.90376569038

now we have:
7.5 is 156.90376569038% of 4.78