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Finding the Fourth Proportional to 159,456.60, 220,128.84 and 108,732.78

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Solution

The fourth proportional to 159,456.60, 220,128.84 and 108,732.78 is: 150,104.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,456.60 : 220,128.84 = 108,732.78 : x
  2. Step 2: Convert to fraction form
    159,456.60/220,128.84 = 108,732.78/x
  3. Step 3: Cross multiply
    159,456.60x = 220,128.84 × 108,732.78
  4. Step 4: Simplify right side
    159,456.60x = 23,935,220,731.38
  5. Step 5: Solve for x
    x = 23,935,220,731.38/159,456.60
  6. Step 6: Final answer
    x = 150,104.92

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1.5x scale

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.