Home / 129,634.20-194,451.30-66,648.60

Finding the Fourth Proportional to 129,634.20, 194,451.30 and 66,648.60

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Solution

The fourth proportional to 129,634.20, 194,451.30 and 66,648.60 is: 99,972.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,634.20 : 194,451.30 = 66,648.60 : x
  2. Step 2: Convert to fraction form
    129,634.20/194,451.30 = 66,648.60/x
  3. Step 3: Cross multiply
    129,634.20x = 194,451.30 × 66,648.60
  4. Step 4: Simplify right side
    129,634.20x = 12,959,906,913.18
  5. Step 5: Solve for x
    x = 12,959,906,913.18/129,634.20
  6. Step 6: Final answer
    x = 99,972.90

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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.