Home / 129,853.60-194,731.80-45,581.20

Finding the Fourth Proportional to 129,853.60, 194,731.80 and 45,581.20

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Solution

The fourth proportional to 129,853.60, 194,731.80 and 45,581.20 is: 68,354.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,853.60 : 194,731.80 = 45,581.20 : x
  2. Step 2: Convert to fraction form
    129,853.60/194,731.80 = 45,581.20/x
  3. Step 3: Cross multiply
    129,853.60x = 194,731.80 × 45,581.20
  4. Step 4: Simplify right side
    129,853.60x = 8,876,109,122.16
  5. Step 5: Solve for x
    x = 8,876,109,122.16/129,853.60
  6. Step 6: Final answer
    x = 68,354.74

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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.