Home / 129,579.99-193,931.10-79,691.73

Finding the Fourth Proportional to 129,579.99, 193,931.10 and 79,691.73

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Solution

The fourth proportional to 129,579.99, 193,931.10 and 79,691.73 is: 119,267.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,579.99 : 193,931.10 = 79,691.73 : x
  2. Step 2: Convert to fraction form
    129,579.99/193,931.10 = 79,691.73/x
  3. Step 3: Cross multiply
    129,579.99x = 193,931.10 × 79,691.73
  4. Step 4: Simplify right side
    129,579.99x = 15,454,704,859.80
  5. Step 5: Solve for x
    x = 15,454,704,859.80/129,579.99
  6. Step 6: Final answer
    x = 119,267.68

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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.