Home / 143,821.67-198,480.69-80,159.92

Finding the Fourth Proportional to 143,821.67, 198,480.69 and 80,159.92

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Solution

The fourth proportional to 143,821.67, 198,480.69 and 80,159.92 is: 110,624.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,821.67 : 198,480.69 = 80,159.92 : x
  2. Step 2: Convert to fraction form
    143,821.67/198,480.69 = 80,159.92/x
  3. Step 3: Cross multiply
    143,821.67x = 198,480.69 × 80,159.92
  4. Step 4: Simplify right side
    143,821.67x = 15,910,195,735.74
  5. Step 5: Solve for x
    x = 15,910,195,735.74/143,821.67
  6. Step 6: Final answer
    x = 110,624.47

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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.