Home / 129,819.15-179,151.80-72,463.95

Finding the Fourth Proportional to 129,819.15, 179,151.80 and 72,463.95

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Solution

The fourth proportional to 129,819.15, 179,151.80 and 72,463.95 is: 100,001.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,819.15 : 179,151.80 = 72,463.95 : x
  2. Step 2: Convert to fraction form
    129,819.15/179,151.80 = 72,463.95/x
  3. Step 3: Cross multiply
    129,819.15x = 179,151.80 × 72,463.95
  4. Step 4: Simplify right side
    129,819.15x = 12,982,046,715.29
  5. Step 5: Solve for x
    x = 12,982,046,715.29/129,819.15
  6. Step 6: Final answer
    x = 100,001.01

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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.