Home / 216,198.92-324,265.11-72,107.28

Finding the Fourth Proportional to 216,198.92, 324,265.11 and 72,107.28

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Solution

The fourth proportional to 216,198.92, 324,265.11 and 72,107.28 is: 108,149.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,198.92 : 324,265.11 = 72,107.28 : x
  2. Step 2: Convert to fraction form
    216,198.92/324,265.11 = 72,107.28/x
  3. Step 3: Cross multiply
    216,198.92x = 324,265.11 × 72,107.28
  4. Step 4: Simplify right side
    216,198.92x = 23,381,874,810.60
  5. Step 5: Solve for x
    x = 23,381,874,810.60/216,198.92
  6. Step 6: Final answer
    x = 108,149.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.