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Finding the Fourth Proportional to 129,379.68, 194,010 and 67,093.92

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Solution

The fourth proportional to 129,379.68, 194,010 and 67,093.92 is: 100,610.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,379.68 : 194,010 = 67,093.92 : x
  2. Step 2: Convert to fraction form
    129,379.68/194,010 = 67,093.92/x
  3. Step 3: Cross multiply
    129,379.68x = 194,010 × 67,093.92
  4. Step 4: Simplify right side
    129,379.68x = 13,016,891,419.20
  5. Step 5: Solve for x
    x = 13,016,891,419.20/129,379.68
  6. Step 6: Final answer
    x = 100,610.01

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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.