Finding the Fourth Proportional to 117,134.10, 161,643.09 and 63,418.68
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Solution
The fourth proportional to 117,134.10, 161,643.09 and 63,418.68 is: 87,516.71
Step by Step Solution
- Step 1: Write the proportion equation
117,134.10 : 161,643.09 = 63,418.68 : x - Step 2: Convert to fraction form
117,134.10/161,643.09 = 63,418.68/x - Step 3: Cross multiply
117,134.10x = 161,643.09 × 63,418.68 - Step 4: Simplify right side
117,134.10x = 10,251,191,398.92 - Step 5: Solve for x
x = 10,251,191,398.92/117,134.10 - Step 6: Final answer
x = 87,516.71
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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.