Home / 129,864.40-194,796.60-74,414.80

Finding the Fourth Proportional to 129,864.40, 194,796.60 and 74,414.80

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Solution

The fourth proportional to 129,864.40, 194,796.60 and 74,414.80 is: 111,622.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,864.40 : 194,796.60 = 74,414.80 : x
  2. Step 2: Convert to fraction form
    129,864.40/194,796.60 = 74,414.80/x
  3. Step 3: Cross multiply
    129,864.40x = 194,796.60 × 74,414.80
  4. Step 4: Simplify right side
    129,864.40x = 14,495,750,029.68
  5. Step 5: Solve for x
    x = 14,495,750,029.68/129,864.40
  6. Step 6: Final answer
    x = 111,622.20

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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.