Home / 143,900.76-198,589.20-80,238.57

Finding the Fourth Proportional to 143,900.76, 198,589.20 and 80,238.57

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Solution

The fourth proportional to 143,900.76, 198,589.20 and 80,238.57 is: 110,732.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,900.76 : 198,589.20 = 80,238.57 : x
  2. Step 2: Convert to fraction form
    143,900.76/198,589.20 = 80,238.57/x
  3. Step 3: Cross multiply
    143,900.76x = 198,589.20 × 80,238.57
  4. Step 4: Simplify right side
    143,900.76x = 15,934,513,425.44
  5. Step 5: Solve for x
    x = 15,934,513,425.44/143,900.76
  6. Step 6: Final answer
    x = 110,732.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.