Finding the Fourth Proportional to 125,286.36, 172,884.42 and 71,560.68
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Solution
The fourth proportional to 125,286.36, 172,884.42 and 71,560.68 is: 98,747.59
Step by Step Solution
- Step 1: Write the proportion equation
125,286.36 : 172,884.42 = 71,560.68 : x - Step 2: Convert to fraction form
125,286.36/172,884.42 = 71,560.68/x - Step 3: Cross multiply
125,286.36x = 172,884.42 × 71,560.68 - Step 4: Simplify right side
125,286.36x = 12,371,726,656.61 - Step 5: Solve for x
x = 12,371,726,656.61/125,286.36 - Step 6: Final answer
x = 98,747.59
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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.