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Finding the Fourth Proportional to 159,500.80, 239,115.30 and 70,705.90

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Solution

The fourth proportional to 159,500.80, 239,115.30 and 70,705.90 is: 105,998.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,500.80 : 239,115.30 = 70,705.90 : x
  2. Step 2: Convert to fraction form
    159,500.80/239,115.30 = 70,705.90/x
  3. Step 3: Cross multiply
    159,500.80x = 239,115.30 × 70,705.90
  4. Step 4: Simplify right side
    159,500.80x = 16,906,862,490.27
  5. Step 5: Solve for x
    x = 16,906,862,490.27/159,500.80
  6. Step 6: Final answer
    x = 105,998.61

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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.