Finding the Fourth Proportional to 125,079.60, 172,609.56 and 68,490.48
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Solution
The fourth proportional to 125,079.60, 172,609.56 and 68,490.48 is: 94,516.70
Step by Step Solution
- Step 1: Write the proportion equation
125,079.60 : 172,609.56 = 68,490.48 : x - Step 2: Convert to fraction form
125,079.60/172,609.56 = 68,490.48/x - Step 3: Cross multiply
125,079.60x = 172,609.56 × 68,490.48 - Step 4: Simplify right side
125,079.60x = 11,822,111,616.99 - Step 5: Solve for x
x = 11,822,111,616.99/125,079.60 - Step 6: Final answer
x = 94,516.70
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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.