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Finding the Fourth Proportional to 177,789.60, 266,587.20 and 72,489.60

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Solution

The fourth proportional to 177,789.60, 266,587.20 and 72,489.60 is: 108,694.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,789.60 : 266,587.20 = 72,489.60 : x
  2. Step 2: Convert to fraction form
    177,789.60/266,587.20 = 72,489.60/x
  3. Step 3: Cross multiply
    177,789.60x = 266,587.20 × 72,489.60
  4. Step 4: Simplify right side
    177,789.60x = 19,324,799,493.12
  5. Step 5: Solve for x
    x = 19,324,799,493.12/177,789.60
  6. Step 6: Final answer
    x = 108,694.77

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1.5x scale

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.