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Finding the Fourth Proportional to 119,700.57, 179,754.23 and 79,974.83

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Solution

The fourth proportional to 119,700.57, 179,754.23 and 79,974.83 is: 120,098.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,700.57 : 179,754.23 = 79,974.83 : x
  2. Step 2: Convert to fraction form
    119,700.57/179,754.23 = 79,974.83/x
  3. Step 3: Cross multiply
    119,700.57x = 179,754.23 × 79,974.83
  4. Step 4: Simplify right side
    119,700.57x = 14,375,813,820.25
  5. Step 5: Solve for x
    x = 14,375,813,820.25/119,700.57
  6. Step 6: Final answer
    x = 120,098.13

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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.