Home / 129,486.35-194,411.24-66,351.83

Finding the Fourth Proportional to 129,486.35, 194,411.24 and 66,351.83

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Solution

The fourth proportional to 129,486.35, 194,411.24 and 66,351.83 is: 99,620.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,486.35 : 194,411.24 = 66,351.83 : x
  2. Step 2: Convert to fraction form
    129,486.35/194,411.24 = 66,351.83/x
  3. Step 3: Cross multiply
    129,486.35x = 194,411.24 × 66,351.83
  4. Step 4: Simplify right side
    129,486.35x = 12,899,542,131.92
  5. Step 5: Solve for x
    x = 12,899,542,131.92/129,486.35
  6. Step 6: Final answer
    x = 99,620.87

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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.