Home / 129,607.92-178,790.67-89,251.74

Finding the Fourth Proportional to 129,607.92, 178,790.67 and 89,251.74

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Solution

The fourth proportional to 129,607.92, 178,790.67 and 89,251.74 is: 123,120.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,607.92 : 178,790.67 = 89,251.74 : x
  2. Step 2: Convert to fraction form
    129,607.92/178,790.67 = 89,251.74/x
  3. Step 3: Cross multiply
    129,607.92x = 178,790.67 × 89,251.74
  4. Step 4: Simplify right side
    129,607.92x = 15,957,378,393.27
  5. Step 5: Solve for x
    x = 15,957,378,393.27/129,607.92
  6. Step 6: Final answer
    x = 123,120.40

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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.