Home / 143,991.45-198,708.28-80,329.25

Finding the Fourth Proportional to 143,991.45, 198,708.28 and 80,329.25

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Solution

The fourth proportional to 143,991.45, 198,708.28 and 80,329.25 is: 110,854.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,991.45 : 198,708.28 = 80,329.25 : x
  2. Step 2: Convert to fraction form
    143,991.45/198,708.28 = 80,329.25/x
  3. Step 3: Cross multiply
    143,991.45x = 198,708.28 × 80,329.25
  4. Step 4: Simplify right side
    143,991.45x = 15,962,086,704.50
  5. Step 5: Solve for x
    x = 15,962,086,704.50/143,991.45
  6. Step 6: Final answer
    x = 110,854.41

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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.