Home / 129,496.60-178,704.66-72,908.38

Finding the Fourth Proportional to 129,496.60, 178,704.66 and 72,908.38

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Solution

The fourth proportional to 129,496.60, 178,704.66 and 72,908.38 is: 100,613.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,496.60 : 178,704.66 = 72,908.38 : x
  2. Step 2: Convert to fraction form
    129,496.60/178,704.66 = 72,908.38/x
  3. Step 3: Cross multiply
    129,496.60x = 178,704.66 × 72,908.38
  4. Step 4: Simplify right side
    129,496.60x = 13,029,067,259.05
  5. Step 5: Solve for x
    x = 13,029,067,259.05/129,496.60
  6. Step 6: Final answer
    x = 100,613.20

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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.