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Finding the Fourth Proportional to 122,441.88, 168,956.78 and 68,732.81

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Solution

The fourth proportional to 122,441.88, 168,956.78 and 68,732.81 is: 94,843.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,441.88 : 168,956.78 = 68,732.81 : x
  2. Step 2: Convert to fraction form
    122,441.88/168,956.78 = 68,732.81/x
  3. Step 3: Cross multiply
    122,441.88x = 168,956.78 × 68,732.81
  4. Step 4: Simplify right side
    122,441.88x = 11,612,873,069.50
  5. Step 5: Solve for x
    x = 11,612,873,069.50/122,441.88
  6. Step 6: Final answer
    x = 94,843.96

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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.