Finding the Fourth Proportional to 117,130.06, 161,639.55 and 63,415.09
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Solution
The fourth proportional to 117,130.06, 161,639.55 and 63,415.09 is: 87,512.86
Step by Step Solution
- Step 1: Write the proportion equation
117,130.06 : 161,639.55 = 63,415.09 : x - Step 2: Convert to fraction form
117,130.06/161,639.55 = 63,415.09/x - Step 3: Cross multiply
117,130.06x = 161,639.55 × 63,415.09 - Step 4: Simplify right side
117,130.06x = 10,250,386,610.81 - Step 5: Solve for x
x = 10,250,386,610.81/117,130.06 - Step 6: Final answer
x = 87,512.86
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.