Home / 144,198.96-198,986.04-80,540.88

Finding the Fourth Proportional to 144,198.96, 198,986.04 and 80,540.88

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Solution

The fourth proportional to 144,198.96, 198,986.04 and 80,540.88 is: 111,141.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,198.96 : 198,986.04 = 80,540.88 : x
  2. Step 2: Convert to fraction form
    144,198.96/198,986.04 = 80,540.88/x
  3. Step 3: Cross multiply
    144,198.96x = 198,986.04 × 80,540.88
  4. Step 4: Simplify right side
    144,198.96x = 16,026,510,769.32
  5. Step 5: Solve for x
    x = 16,026,510,769.32/144,198.96
  6. Step 6: Final answer
    x = 111,141.65

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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.