Home / 143,921.80-198,620.58-80,257.96

Finding the Fourth Proportional to 143,921.80, 198,620.58 and 80,257.96

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Solution

The fourth proportional to 143,921.80, 198,620.58 and 80,257.96 is: 110,760.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,921.80 : 198,620.58 = 80,257.96 : x
  2. Step 2: Convert to fraction form
    143,921.80/198,620.58 = 80,257.96/x
  3. Step 3: Cross multiply
    143,921.80x = 198,620.58 × 80,257.96
  4. Step 4: Simplify right side
    143,921.80x = 15,940,882,564.82
  5. Step 5: Solve for x
    x = 15,940,882,564.82/143,921.80
  6. Step 6: Final answer
    x = 110,760.72

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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.