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Finding the Fourth Proportional to 122,442.60, 168,949.44 and 68,729.88

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Solution

The fourth proportional to 122,442.60, 168,949.44 and 68,729.88 is: 94,835.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,442.60 : 168,949.44 = 68,729.88 : x
  2. Step 2: Convert to fraction form
    122,442.60/168,949.44 = 68,729.88/x
  3. Step 3: Cross multiply
    122,442.60x = 168,949.44 × 68,729.88
  4. Step 4: Simplify right side
    122,442.60x = 11,611,874,737.27
  5. Step 5: Solve for x
    x = 11,611,874,737.27/122,442.60
  6. Step 6: Final answer
    x = 94,835.25

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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.