Home / 143,941.20-198,639.72-80,283.10

Finding the Fourth Proportional to 143,941.20, 198,639.72 and 80,283.10

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Solution

The fourth proportional to 143,941.20, 198,639.72 and 80,283.10 is: 110,791.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,941.20 : 198,639.72 = 80,283.10 : x
  2. Step 2: Convert to fraction form
    143,941.20/198,639.72 = 80,283.10/x
  3. Step 3: Cross multiply
    143,941.20x = 198,639.72 × 80,283.10
  4. Step 4: Simplify right side
    143,941.20x = 15,947,412,504.73
  5. Step 5: Solve for x
    x = 15,947,412,504.73/143,941.20
  6. Step 6: Final answer
    x = 110,791.16

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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.