Finding the Fourth Proportional to 128,449.80, 192,680.17 and 39,704.99
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Solution
The fourth proportional to 128,449.80, 192,680.17 and 39,704.99 is: 59,559.17
Step by Step Solution
- Step 1: Write the proportion equation
128,449.80 : 192,680.17 = 39,704.99 : x - Step 2: Convert to fraction form
128,449.80/192,680.17 = 39,704.99/x - Step 3: Cross multiply
128,449.80x = 192,680.17 × 39,704.99 - Step 4: Simplify right side
128,449.80x = 7,650,363,160.38 - Step 5: Solve for x
x = 7,650,363,160.38/128,449.80 - Step 6: Final answer
x = 59,559.17
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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.