Home / 129,691.72-194,589.42-70,458.04

Finding the Fourth Proportional to 129,691.72, 194,589.42 and 70,458.04

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Solution

The fourth proportional to 129,691.72, 194,589.42 and 70,458.04 is: 105,715.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,691.72 : 194,589.42 = 70,458.04 : x
  2. Step 2: Convert to fraction form
    129,691.72/194,589.42 = 70,458.04/x
  3. Step 3: Cross multiply
    129,691.72x = 194,589.42 × 70,458.04
  4. Step 4: Simplify right side
    129,691.72x = 13,710,389,137.94
  5. Step 5: Solve for x
    x = 13,710,389,137.94/129,691.72
  6. Step 6: Final answer
    x = 105,715.22

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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.