Home / 143,766.27-198,398.79-79,237.86

Finding the Fourth Proportional to 143,766.27, 198,398.79 and 79,237.86

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Solution

The fourth proportional to 143,766.27, 198,398.79 and 79,237.86 is: 109,348.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,766.27 : 198,398.79 = 79,237.86 : x
  2. Step 2: Convert to fraction form
    143,766.27/198,398.79 = 79,237.86/x
  3. Step 3: Cross multiply
    143,766.27x = 198,398.79 × 79,237.86
  4. Step 4: Simplify right side
    143,766.27x = 15,720,695,546.19
  5. Step 5: Solve for x
    x = 15,720,695,546.19/143,766.27
  6. Step 6: Final answer
    x = 109,348.98

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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.