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Finding the Fourth Proportional to 129,876.10, 194,719.11 and 41,079.94

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Solution

The fourth proportional to 129,876.10, 194,719.11 and 41,079.94 is: 61,589.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,876.10 : 194,719.11 = 41,079.94 : x
  2. Step 2: Convert to fraction form
    129,876.10/194,719.11 = 41,079.94/x
  3. Step 3: Cross multiply
    129,876.10x = 194,719.11 × 41,079.94
  4. Step 4: Simplify right side
    129,876.10x = 7,999,049,355.65
  5. Step 5: Solve for x
    x = 7,999,049,355.65/129,876.10
  6. Step 6: Final answer
    x = 61,589.85

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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.