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Finding the Fourth Proportional to 159,388.20, 239,229.90 and 80,557.56

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Solution

The fourth proportional to 159,388.20, 239,229.90 and 80,557.56 is: 120,910.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,388.20 : 239,229.90 = 80,557.56 : x
  2. Step 2: Convert to fraction form
    159,388.20/239,229.90 = 80,557.56/x
  3. Step 3: Cross multiply
    159,388.20x = 239,229.90 × 80,557.56
  4. Step 4: Simplify right side
    159,388.20x = 19,271,777,023.04
  5. Step 5: Solve for x
    x = 19,271,777,023.04/159,388.20
  6. Step 6: Final answer
    x = 120,910.94

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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.