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Finding the Fourth Proportional to 129,179.80, 193,769.70 and 82,293.40

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Solution

The fourth proportional to 129,179.80, 193,769.70 and 82,293.40 is: 123,440.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,179.80 : 193,769.70 = 82,293.40 : x
  2. Step 2: Convert to fraction form
    129,179.80/193,769.70 = 82,293.40/x
  3. Step 3: Cross multiply
    129,179.80x = 193,769.70 × 82,293.40
  4. Step 4: Simplify right side
    129,179.80x = 15,945,967,429.98
  5. Step 5: Solve for x
    x = 15,945,967,429.98/129,179.80
  6. Step 6: Final answer
    x = 123,440.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.