Home / 129,514.72-194,286-40,770.88

Finding the Fourth Proportional to 129,514.72, 194,286 and 40,770.88

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Solution

The fourth proportional to 129,514.72, 194,286 and 40,770.88 is: 61,160.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,514.72 : 194,286 = 40,770.88 : x
  2. Step 2: Convert to fraction form
    129,514.72/194,286 = 40,770.88/x
  3. Step 3: Cross multiply
    129,514.72x = 194,286 × 40,770.88
  4. Step 4: Simplify right side
    129,514.72x = 7,921,211,191.68
  5. Step 5: Solve for x
    x = 7,921,211,191.68/129,514.72
  6. Step 6: Final answer
    x = 61,160.70

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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.