Finding the Fourth Proportional to 100,609.88, 138,841.63 and 58,171.14
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Solution
The fourth proportional to 100,609.88, 138,841.63 and 58,171.14 is: 80,276.17
Step by Step Solution
- Step 1: Write the proportion equation
100,609.88 : 138,841.63 = 58,171.14 : x - Step 2: Convert to fraction form
100,609.88/138,841.63 = 58,171.14/x - Step 3: Cross multiply
100,609.88x = 138,841.63 × 58,171.14 - Step 4: Simplify right side
100,609.88x = 8,076,575,751.13 - Step 5: Solve for x
x = 8,076,575,751.13/100,609.88 - Step 6: Final answer
x = 80,276.17
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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.