Home / 129,983.20-194,974.80-67,645.60

Finding the Fourth Proportional to 129,983.20, 194,974.80 and 67,645.60

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Solution

The fourth proportional to 129,983.20, 194,974.80 and 67,645.60 is: 101,468.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,983.20 : 194,974.80 = 67,645.60 : x
  2. Step 2: Convert to fraction form
    129,983.20/194,974.80 = 67,645.60/x
  3. Step 3: Cross multiply
    129,983.20x = 194,974.80 × 67,645.60
  4. Step 4: Simplify right side
    129,983.20x = 13,189,187,330.88
  5. Step 5: Solve for x
    x = 13,189,187,330.88/129,983.20
  6. Step 6: Final answer
    x = 101,468.40

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1.5x scale

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.