Home / 143,905.28-198,590.72-79,377.27

Finding the Fourth Proportional to 143,905.28, 198,590.72 and 79,377.27

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Solution

The fourth proportional to 143,905.28, 198,590.72 and 79,377.27 is: 109,541.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,905.28 : 198,590.72 = 79,377.27 : x
  2. Step 2: Convert to fraction form
    143,905.28/198,590.72 = 79,377.27/x
  3. Step 3: Cross multiply
    143,905.28x = 198,590.72 × 79,377.27
  4. Step 4: Simplify right side
    143,905.28x = 15,763,589,399.38
  5. Step 5: Solve for x
    x = 15,763,589,399.38/143,905.28
  6. Step 6: Final answer
    x = 109,541.43

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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.