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Finding the Fourth Proportional to 148,778.52, 205,310.34 and 80,792.39

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Solution

The fourth proportional to 148,778.52, 205,310.34 and 80,792.39 is: 111,491.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,778.52 : 205,310.34 = 80,792.39 : x
  2. Step 2: Convert to fraction form
    148,778.52/205,310.34 = 80,792.39/x
  3. Step 3: Cross multiply
    148,778.52x = 205,310.34 × 80,792.39
  4. Step 4: Simplify right side
    148,778.52x = 16,587,512,033.76
  5. Step 5: Solve for x
    x = 16,587,512,033.76/148,778.52
  6. Step 6: Final answer
    x = 111,491.31

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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.