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Finding the Fourth Proportional to 169,967.60, 254,951.32 and 80,951.28

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Solution

The fourth proportional to 169,967.60, 254,951.32 and 80,951.28 is: 121,426.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,967.60 : 254,951.32 = 80,951.28 : x
  2. Step 2: Convert to fraction form
    169,967.60/254,951.32 = 80,951.28/x
  3. Step 3: Cross multiply
    169,967.60x = 254,951.32 × 80,951.28
  4. Step 4: Simplify right side
    169,967.60x = 20,638,635,691.69
  5. Step 5: Solve for x
    x = 20,638,635,691.69/169,967.60
  6. Step 6: Final answer
    x = 121,426.88

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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.