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Finding the Fourth Proportional to 231,060, 318,862.80 and 125,076

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Solution

The fourth proportional to 231,060, 318,862.80 and 125,076 is: 172,604.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,060 : 318,862.80 = 125,076 : x
  2. Step 2: Convert to fraction form
    231,060/318,862.80 = 125,076/x
  3. Step 3: Cross multiply
    231,060x = 318,862.80 × 125,076
  4. Step 4: Simplify right side
    231,060x = 39,882,083,572.80
  5. Step 5: Solve for x
    x = 39,882,083,572.80/231,060
  6. Step 6: Final answer
    x = 172,604.88

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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.