Home / 129,230.28-178,337.57-71,868.04

Finding the Fourth Proportional to 129,230.28, 178,337.57 and 71,868.04

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Solution

The fourth proportional to 129,230.28, 178,337.57 and 71,868.04 is: 99,177.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,230.28 : 178,337.57 = 71,868.04 : x
  2. Step 2: Convert to fraction form
    129,230.28/178,337.57 = 71,868.04/x
  3. Step 3: Cross multiply
    129,230.28x = 178,337.57 × 71,868.04
  4. Step 4: Simplify right side
    129,230.28x = 12,816,770,809.08
  5. Step 5: Solve for x
    x = 12,816,770,809.08/129,230.28
  6. Step 6: Final answer
    x = 99,177.77

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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.