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Finding the Fourth Proportional to 159,572.60, 239,301.30 and 80,660.60

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Solution

The fourth proportional to 159,572.60, 239,301.30 and 80,660.60 is: 120,961.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,572.60 : 239,301.30 = 80,660.60 : x
  2. Step 2: Convert to fraction form
    159,572.60/239,301.30 = 80,660.60/x
  3. Step 3: Cross multiply
    159,572.60x = 239,301.30 × 80,660.60
  4. Step 4: Simplify right side
    159,572.60x = 19,302,186,438.78
  5. Step 5: Solve for x
    x = 19,302,186,438.78/159,572.60
  6. Step 6: Final answer
    x = 120,961.78

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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.