Home / 143,772.29-198,407.07-79,243.86

Finding the Fourth Proportional to 143,772.29, 198,407.07 and 79,243.86

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Solution

The fourth proportional to 143,772.29, 198,407.07 and 79,243.86 is: 109,357.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,772.29 : 198,407.07 = 79,243.86 : x
  2. Step 2: Convert to fraction form
    143,772.29/198,407.07 = 79,243.86/x
  3. Step 3: Cross multiply
    143,772.29x = 198,407.07 × 79,243.86
  4. Step 4: Simplify right side
    143,772.29x = 15,722,542,078.09
  5. Step 5: Solve for x
    x = 15,722,542,078.09/143,772.29
  6. Step 6: Final answer
    x = 109,357.25

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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.