Home / 129,850.20-194,921.10-100,398.60

Finding the Fourth Proportional to 129,850.20, 194,921.10 and 100,398.60

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Solution

The fourth proportional to 129,850.20, 194,921.10 and 100,398.60 is: 150,710.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,850.20 : 194,921.10 = 100,398.60 : x
  2. Step 2: Convert to fraction form
    129,850.20/194,921.10 = 100,398.60/x
  3. Step 3: Cross multiply
    129,850.20x = 194,921.10 × 100,398.60
  4. Step 4: Simplify right side
    129,850.20x = 19,569,805,550.46
  5. Step 5: Solve for x
    x = 19,569,805,550.46/129,850.20
  6. Step 6: Final answer
    x = 150,710.63

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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.