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Finding the Fourth Proportional to 159,763.92, 239,470.92 and 80,769.48

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Solution

The fourth proportional to 159,763.92, 239,470.92 and 80,769.48 is: 121,065.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,763.92 : 239,470.92 = 80,769.48 : x
  2. Step 2: Convert to fraction form
    159,763.92/239,470.92 = 80,769.48/x
  3. Step 3: Cross multiply
    159,763.92x = 239,470.92 × 80,769.48
  4. Step 4: Simplify right side
    159,763.92x = 19,341,941,683.52
  5. Step 5: Solve for x
    x = 19,341,941,683.52/159,763.92
  6. Step 6: Final answer
    x = 121,065.77

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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.