Home / 129,626.09-178,882.94-72,264.73

Finding the Fourth Proportional to 129,626.09, 178,882.94 and 72,264.73

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Solution

The fourth proportional to 129,626.09, 178,882.94 and 72,264.73 is: 99,724.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,626.09 : 178,882.94 = 72,264.73 : x
  2. Step 2: Convert to fraction form
    129,626.09/178,882.94 = 72,264.73/x
  3. Step 3: Cross multiply
    129,626.09x = 178,882.94 × 72,264.73
  4. Step 4: Simplify right side
    129,626.09x = 12,926,926,104.97
  5. Step 5: Solve for x
    x = 12,926,926,104.97/129,626.09
  6. Step 6: Final answer
    x = 99,724.72

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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.