Finding the Fourth Proportional to 117,129.11, 161,637.97 and 63,414.13
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Solution
The fourth proportional to 117,129.11, 161,637.97 and 63,414.13 is: 87,511.38
Step by Step Solution
- Step 1: Write the proportion equation
117,129.11 : 161,637.97 = 63,414.13 : x - Step 2: Convert to fraction form
117,129.11/161,637.97 = 63,414.13/x - Step 3: Cross multiply
117,129.11x = 161,637.97 × 63,414.13 - Step 4: Simplify right side
117,129.11x = 10,250,130,117.26 - Step 5: Solve for x
x = 10,250,130,117.26/117,129.11 - Step 6: Final answer
x = 87,511.38
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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.