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Finding the Fourth Proportional to 159,704.70, 239,751.45 and 80,778.30

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Solution

The fourth proportional to 159,704.70, 239,751.45 and 80,778.30 is: 121,265.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,704.70 : 239,751.45 = 80,778.30 : x
  2. Step 2: Convert to fraction form
    159,704.70/239,751.45 = 80,778.30/x
  3. Step 3: Cross multiply
    159,704.70x = 239,751.45 × 80,778.30
  4. Step 4: Simplify right side
    159,704.70x = 19,366,714,553.54
  5. Step 5: Solve for x
    x = 19,366,714,553.54/159,704.70
  6. Step 6: Final answer
    x = 121,265.78

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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.