Home / 129,232.92-178,340.46-71,872.76

Finding the Fourth Proportional to 129,232.92, 178,340.46 and 71,872.76

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Solution

The fourth proportional to 129,232.92, 178,340.46 and 71,872.76 is: 99,183.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,232.92 : 178,340.46 = 71,872.76 : x
  2. Step 2: Convert to fraction form
    129,232.92/178,340.46 = 71,872.76/x
  3. Step 3: Cross multiply
    129,232.92x = 178,340.46 × 71,872.76
  4. Step 4: Simplify right side
    129,232.92x = 12,817,821,079.87
  5. Step 5: Solve for x
    x = 12,817,821,079.87/129,232.92
  6. Step 6: Final answer
    x = 99,183.87

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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.