Home / 129,546.50-178,769.44-72,182.85

Finding the Fourth Proportional to 129,546.50, 178,769.44 and 72,182.85

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Solution

The fourth proportional to 129,546.50, 178,769.44 and 72,182.85 is: 99,609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,546.50 : 178,769.44 = 72,182.85 : x
  2. Step 2: Convert to fraction form
    129,546.50/178,769.44 = 72,182.85/x
  3. Step 3: Cross multiply
    129,546.50x = 178,769.44 × 72,182.85
  4. Step 4: Simplify right side
    129,546.50x = 12,904,087,672.10
  5. Step 5: Solve for x
    x = 12,904,087,672.10/129,546.50
  6. Step 6: Final answer
    x = 99,609.70

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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.