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Finding the Fourth Proportional to 171,454.60, 257,073.90 and 71,684.20

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Solution

The fourth proportional to 171,454.60, 257,073.90 and 71,684.20 is: 107,481.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,454.60 : 257,073.90 = 71,684.20 : x
  2. Step 2: Convert to fraction form
    171,454.60/257,073.90 = 71,684.20/x
  3. Step 3: Cross multiply
    171,454.60x = 257,073.90 × 71,684.20
  4. Step 4: Simplify right side
    171,454.60x = 18,428,136,862.38
  5. Step 5: Solve for x
    x = 18,428,136,862.38/171,454.60
  6. Step 6: Final answer
    x = 107,481.15

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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.