Home / 129,925.28-179,296.13-72,563.92

Finding the Fourth Proportional to 129,925.28, 179,296.13 and 72,563.92

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Solution

The fourth proportional to 129,925.28, 179,296.13 and 72,563.92 is: 100,137.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,925.28 : 179,296.13 = 72,563.92 : x
  2. Step 2: Convert to fraction form
    129,925.28/179,296.13 = 72,563.92/x
  3. Step 3: Cross multiply
    129,925.28x = 179,296.13 × 72,563.92
  4. Step 4: Simplify right side
    129,925.28x = 13,010,429,766.80
  5. Step 5: Solve for x
    x = 13,010,429,766.80/129,925.28
  6. Step 6: Final answer
    x = 100,137.78

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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.