Home / 129,508,917.42-194,364,114.43-90,393,257.69

Finding the Fourth Proportional to 129,508,917.42, 194,364,114.43 and 90,393,257.69

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Solution

The fourth proportional to 129,508,917.42, 194,364,114.43 and 90,393,257.69 is: 135,660,198.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,508,917.42 : 194,364,114.43 = 90,393,257.69 : x
  2. Step 2: Convert to fraction form
    129,508,917.42/194,364,114.43 = 90,393,257.69/x
  3. Step 3: Cross multiply
    129,508,917.42x = 194,364,114.43 × 90,393,257.69
  4. Step 4: Simplify right side
    129,508,917.42x = 17,569,205,481,359,638
  5. Step 5: Solve for x
    x = 17,569,205,481,359,638/129,508,917.42
  6. Step 6: Final answer
    x = 135,660,198.78

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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.