Finding the Fourth Proportional to 125,021.26, 187,473.57 and 72,445.78
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Solution
The fourth proportional to 125,021.26, 187,473.57 and 72,445.78 is: 108,634.88
Step by Step Solution
- Step 1: Write the proportion equation
125,021.26 : 187,473.57 = 72,445.78 : x - Step 2: Convert to fraction form
125,021.26/187,473.57 = 72,445.78/x - Step 3: Cross multiply
125,021.26x = 187,473.57 × 72,445.78 - Step 4: Simplify right side
125,021.26x = 13,581,669,008.03 - Step 5: Solve for x
x = 13,581,669,008.03/125,021.26 - Step 6: Final answer
x = 108,634.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.