Home / 129,659.20-194,464.80-36,145.60

Finding the Fourth Proportional to 129,659.20, 194,464.80 and 36,145.60

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Solution

The fourth proportional to 129,659.20, 194,464.80 and 36,145.60 is: 54,211.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,659.20 : 194,464.80 = 36,145.60 : x
  2. Step 2: Convert to fraction form
    129,659.20/194,464.80 = 36,145.60/x
  3. Step 3: Cross multiply
    129,659.20x = 194,464.80 × 36,145.60
  4. Step 4: Simplify right side
    129,659.20x = 7,029,046,874.88
  5. Step 5: Solve for x
    x = 7,029,046,874.88/129,659.20
  6. Step 6: Final answer
    x = 54,211.71

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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.