Home / 129,372.29-193,996.97-45,122.21

Finding the Fourth Proportional to 129,372.29, 193,996.97 and 45,122.21

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Solution

The fourth proportional to 129,372.29, 193,996.97 and 45,122.21 is: 67,661.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,372.29 : 193,996.97 = 45,122.21 : x
  2. Step 2: Convert to fraction form
    129,372.29/193,996.97 = 45,122.21/x
  3. Step 3: Cross multiply
    129,372.29x = 193,996.97 × 45,122.21
  4. Step 4: Simplify right side
    129,372.29x = 8,753,573,065.85
  5. Step 5: Solve for x
    x = 8,753,573,065.85/129,372.29
  6. Step 6: Final answer
    x = 67,661.89

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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.