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Finding the Fourth Proportional to 171,930.60, 257,990.04 and 66,753.72

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Solution

The fourth proportional to 171,930.60, 257,990.04 and 66,753.72 is: 100,167.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,930.60 : 257,990.04 = 66,753.72 : x
  2. Step 2: Convert to fraction form
    171,930.60/257,990.04 = 66,753.72/x
  3. Step 3: Cross multiply
    171,930.60x = 257,990.04 × 66,753.72
  4. Step 4: Simplify right side
    171,930.60x = 17,221,794,892.95
  5. Step 5: Solve for x
    x = 17,221,794,892.95/171,930.60
  6. Step 6: Final answer
    x = 100,167.13

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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.