Home / 143,689.28-198,283.68-80,025.92

Finding the Fourth Proportional to 143,689.28, 198,283.68 and 80,025.92

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Solution

The fourth proportional to 143,689.28, 198,283.68 and 80,025.92 is: 110,431.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,689.28 : 198,283.68 = 80,025.92 : x
  2. Step 2: Convert to fraction form
    143,689.28/198,283.68 = 80,025.92/x
  3. Step 3: Cross multiply
    143,689.28x = 198,283.68 × 80,025.92
  4. Step 4: Simplify right side
    143,689.28x = 15,867,833,912.99
  5. Step 5: Solve for x
    x = 15,867,833,912.99/143,689.28
  6. Step 6: Final answer
    x = 110,431.58

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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.