Home / 129,679.02-194,424-87,454.20

Finding the Fourth Proportional to 129,679.02, 194,424 and 87,454.20

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Solution

The fourth proportional to 129,679.02, 194,424 and 87,454.20 is: 131,117.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,679.02 : 194,424 = 87,454.20 : x
  2. Step 2: Convert to fraction form
    129,679.02/194,424 = 87,454.20/x
  3. Step 3: Cross multiply
    129,679.02x = 194,424 × 87,454.20
  4. Step 4: Simplify right side
    129,679.02x = 17,003,195,380.80
  5. Step 5: Solve for x
    x = 17,003,195,380.80/129,679.02
  6. Step 6: Final answer
    x = 131,117.55

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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.