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Finding the Fourth Proportional to 129,863.92, 179,202.36 and 73,280.56

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Solution

The fourth proportional to 129,863.92, 179,202.36 and 73,280.56 is: 101,121.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,863.92 : 179,202.36 = 73,280.56 : x
  2. Step 2: Convert to fraction form
    129,863.92/179,202.36 = 73,280.56/x
  3. Step 3: Cross multiply
    129,863.92x = 179,202.36 × 73,280.56
  4. Step 4: Simplify right side
    129,863.92x = 13,132,049,294.12
  5. Step 5: Solve for x
    x = 13,132,049,294.12/129,863.92
  6. Step 6: Final answer
    x = 101,121.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.