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Finding the Fourth Proportional to 148,896.20, 223,344.30 and 138,981.80

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Solution

The fourth proportional to 148,896.20, 223,344.30 and 138,981.80 is: 208,472.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,896.20 : 223,344.30 = 138,981.80 : x
  2. Step 2: Convert to fraction form
    148,896.20/223,344.30 = 138,981.80/x
  3. Step 3: Cross multiply
    148,896.20x = 223,344.30 × 138,981.80
  4. Step 4: Simplify right side
    148,896.20x = 31,040,792,833.74
  5. Step 5: Solve for x
    x = 31,040,792,833.74/148,896.20
  6. Step 6: Final answer
    x = 208,472.70

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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.