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Finding the Fourth Proportional to 122,684.70, 169,300.38 and 68,974.68

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Solution

The fourth proportional to 122,684.70, 169,300.38 and 68,974.68 is: 95,182.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,684.70 : 169,300.38 = 68,974.68 : x
  2. Step 2: Convert to fraction form
    122,684.70/169,300.38 = 68,974.68/x
  3. Step 3: Cross multiply
    122,684.70x = 169,300.38 × 68,974.68
  4. Step 4: Simplify right side
    122,684.70x = 11,677,439,534.38
  5. Step 5: Solve for x
    x = 11,677,439,534.38/122,684.70
  6. Step 6: Final answer
    x = 95,182.53

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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.