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Finding the Fourth Proportional to 122,174.16, 168,610.68 and 68,458.56

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Solution

The fourth proportional to 122,174.16, 168,610.68 and 68,458.56 is: 94,478.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,174.16 : 168,610.68 = 68,458.56 : x
  2. Step 2: Convert to fraction form
    122,174.16/168,610.68 = 68,458.56/x
  3. Step 3: Cross multiply
    122,174.16x = 168,610.68 × 68,458.56
  4. Step 4: Simplify right side
    122,174.16x = 11,542,844,353.42
  5. Step 5: Solve for x
    x = 11,542,844,353.42/122,174.16
  6. Step 6: Final answer
    x = 94,478.61

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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.