Finding the Fourth Proportional to 128,006.68, 192,042.42 and 39,264.70
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Solution
The fourth proportional to 128,006.68, 192,042.42 and 39,264.70 is: 58,906.99
Step by Step Solution
- Step 1: Write the proportion equation
128,006.68 : 192,042.42 = 39,264.70 : x - Step 2: Convert to fraction form
128,006.68/192,042.42 = 39,264.70/x - Step 3: Cross multiply
128,006.68x = 192,042.42 × 39,264.70 - Step 4: Simplify right side
128,006.68x = 7,540,488,008.57 - Step 5: Solve for x
x = 7,540,488,008.57/128,006.68 - Step 6: Final answer
x = 58,906.99
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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.