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Finding the Fourth Proportional to 143,617.96, 198,195.78 and 79,959.88

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Solution

The fourth proportional to 143,617.96, 198,195.78 and 79,959.88 is: 110,346.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,617.96 : 198,195.78 = 79,959.88 : x
  2. Step 2: Convert to fraction form
    143,617.96/198,195.78 = 79,959.88/x
  3. Step 3: Cross multiply
    143,617.96x = 198,195.78 × 79,959.88
  4. Step 4: Simplify right side
    143,617.96x = 15,847,710,785.31
  5. Step 5: Solve for x
    x = 15,847,710,785.31/143,617.96
  6. Step 6: Final answer
    x = 110,346.30

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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.