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Finding the Fourth Proportional to 122,487.44, 169,028.29 and 68,774.72

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Solution

The fourth proportional to 122,487.44, 169,028.29 and 68,774.72 is: 94,906.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,487.44 : 169,028.29 = 68,774.72 : x
  2. Step 2: Convert to fraction form
    122,487.44/169,028.29 = 68,774.72/x
  3. Step 3: Cross multiply
    122,487.44x = 169,028.29 × 68,774.72
  4. Step 4: Simplify right side
    122,487.44x = 11,624,873,121.58
  5. Step 5: Solve for x
    x = 11,624,873,121.58/122,487.44
  6. Step 6: Final answer
    x = 94,906.65

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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.