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Finding the Fourth Proportional to 122,321.20, 183,481.80 and 88,970.80

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Solution

The fourth proportional to 122,321.20, 183,481.80 and 88,970.80 is: 133,456.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,321.20 : 183,481.80 = 88,970.80 : x
  2. Step 2: Convert to fraction form
    122,321.20/183,481.80 = 88,970.80/x
  3. Step 3: Cross multiply
    122,321.20x = 183,481.80 × 88,970.80
  4. Step 4: Simplify right side
    122,321.20x = 16,324,522,531.44
  5. Step 5: Solve for x
    x = 16,324,522,531.44/122,321.20
  6. Step 6: Final answer
    x = 133,456.20

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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.