Home / 129,765.27-194,515.32-82,414.89

Finding the Fourth Proportional to 129,765.27, 194,515.32 and 82,414.89

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Solution

The fourth proportional to 129,765.27, 194,515.32 and 82,414.89 is: 123,538.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,765.27 : 194,515.32 = 82,414.89 : x
  2. Step 2: Convert to fraction form
    129,765.27/194,515.32 = 82,414.89/x
  3. Step 3: Cross multiply
    129,765.27x = 194,515.32 × 82,414.89
  4. Step 4: Simplify right side
    129,765.27x = 16,030,958,701.11
  5. Step 5: Solve for x
    x = 16,030,958,701.11/129,765.27
  6. Step 6: Final answer
    x = 123,538.13

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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.