Home / 143,976.20-198,685.80-79,446.04

Finding the Fourth Proportional to 143,976.20, 198,685.80 and 79,446.04

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Solution

The fourth proportional to 143,976.20, 198,685.80 and 79,446.04 is: 109,634.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,976.20 : 198,685.80 = 79,446.04 : x
  2. Step 2: Convert to fraction form
    143,976.20/198,685.80 = 79,446.04/x
  3. Step 3: Cross multiply
    143,976.20x = 198,685.80 × 79,446.04
  4. Step 4: Simplify right side
    143,976.20x = 15,784,800,014.23
  5. Step 5: Solve for x
    x = 15,784,800,014.23/143,976.20
  6. Step 6: Final answer
    x = 109,634.79

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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.