Home / 143,909.38-198,596.24-79,381.10

Finding the Fourth Proportional to 143,909.38, 198,596.24 and 79,381.10

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Solution

The fourth proportional to 143,909.38, 198,596.24 and 79,381.10 is: 109,546.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,909.38 : 198,596.24 = 79,381.10 : x
  2. Step 2: Convert to fraction form
    143,909.38/198,596.24 = 79,381.10/x
  3. Step 3: Cross multiply
    143,909.38x = 198,596.24 × 79,381.10
  4. Step 4: Simplify right side
    143,909.38x = 15,764,787,987.06
  5. Step 5: Solve for x
    x = 15,764,787,987.06/143,909.38
  6. Step 6: Final answer
    x = 109,546.63

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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.