Finding the Fourth Proportional to 125,213.30, 172,854.18 and 71,487.93
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Solution
The fourth proportional to 125,213.30, 172,854.18 and 71,487.93 is: 98,687.50
Step by Step Solution
- Step 1: Write the proportion equation
125,213.30 : 172,854.18 = 71,487.93 : x - Step 2: Convert to fraction form
125,213.30/172,854.18 = 71,487.93/x - Step 3: Cross multiply
125,213.30x = 172,854.18 × 71,487.93 - Step 4: Simplify right side
125,213.30x = 12,356,987,520.05 - Step 5: Solve for x
x = 12,356,987,520.05/125,213.30 - Step 6: Final answer
x = 98,687.50
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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.