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Finding the Fourth Proportional to 146,839.20, 220,258.80 and 68,107.20

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Solution

The fourth proportional to 146,839.20, 220,258.80 and 68,107.20 is: 102,160.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,839.20 : 220,258.80 = 68,107.20 : x
  2. Step 2: Convert to fraction form
    146,839.20/220,258.80 = 68,107.20/x
  3. Step 3: Cross multiply
    146,839.20x = 220,258.80 × 68,107.20
  4. Step 4: Simplify right side
    146,839.20x = 15,001,210,143.36
  5. Step 5: Solve for x
    x = 15,001,210,143.36/146,839.20
  6. Step 6: Final answer
    x = 102,160.80

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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.