Home / 129,396.72-194,113.17-45,144.57

Finding the Fourth Proportional to 129,396.72, 194,113.17 and 45,144.57

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Solution

The fourth proportional to 129,396.72, 194,113.17 and 45,144.57 is: 67,723.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,396.72 : 194,113.17 = 45,144.57 : x
  2. Step 2: Convert to fraction form
    129,396.72/194,113.17 = 45,144.57/x
  3. Step 3: Cross multiply
    129,396.72x = 194,113.17 × 45,144.57
  4. Step 4: Simplify right side
    129,396.72x = 8,763,155,590.99
  5. Step 5: Solve for x
    x = 8,763,155,590.99/129,396.72
  6. Step 6: Final answer
    x = 67,723.17

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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.