Home / 219,882.20-329,823.30-72,138.20

Finding the Fourth Proportional to 219,882.20, 329,823.30 and 72,138.20

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Solution

The fourth proportional to 219,882.20, 329,823.30 and 72,138.20 is: 108,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,882.20 : 329,823.30 = 72,138.20 : x
  2. Step 2: Convert to fraction form
    219,882.20/329,823.30 = 72,138.20/x
  3. Step 3: Cross multiply
    219,882.20x = 329,823.30 × 72,138.20
  4. Step 4: Simplify right side
    219,882.20x = 23,792,859,180.06
  5. Step 5: Solve for x
    x = 23,792,859,180.06/219,882.20
  6. Step 6: Final answer
    x = 108,207.30

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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.