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Finding the Fourth Proportional to 140,863.92, 194,382.36 and 80,437.92

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Solution

The fourth proportional to 140,863.92, 194,382.36 and 80,437.92 is: 110,998.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,863.92 : 194,382.36 = 80,437.92 : x
  2. Step 2: Convert to fraction form
    140,863.92/194,382.36 = 80,437.92/x
  3. Step 3: Cross multiply
    140,863.92x = 194,382.36 × 80,437.92
  4. Step 4: Simplify right side
    140,863.92x = 15,635,712,723.09
  5. Step 5: Solve for x
    x = 15,635,712,723.09/140,863.92
  6. Step 6: Final answer
    x = 110,998.71

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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.