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Finding the Fourth Proportional to 122,667.53, 169,299.11 and 68,956.97

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Solution

The fourth proportional to 122,667.53, 169,299.11 and 68,956.97 is: 95,170.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,667.53 : 169,299.11 = 68,956.97 : x
  2. Step 2: Convert to fraction form
    122,667.53/169,299.11 = 68,956.97/x
  3. Step 3: Cross multiply
    122,667.53x = 169,299.11 × 68,956.97
  4. Step 4: Simplify right side
    122,667.53x = 11,674,352,975.19
  5. Step 5: Solve for x
    x = 11,674,352,975.19/122,667.53
  6. Step 6: Final answer
    x = 95,170.69

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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.