Home / 143,938.38-198,634.46-80,276.14

Finding the Fourth Proportional to 143,938.38, 198,634.46 and 80,276.14

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Solution

The fourth proportional to 143,938.38, 198,634.46 and 80,276.14 is: 110,780.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,938.38 : 198,634.46 = 80,276.14 : x
  2. Step 2: Convert to fraction form
    143,938.38/198,634.46 = 80,276.14/x
  3. Step 3: Cross multiply
    143,938.38x = 198,634.46 × 80,276.14
  4. Step 4: Simplify right side
    143,938.38x = 15,945,607,318.40
  5. Step 5: Solve for x
    x = 15,945,607,318.40/143,938.38
  6. Step 6: Final answer
    x = 110,780.79

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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.