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Finding the Fourth Proportional to 122,586.48, 169,170 and 68,873.76

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Solution

The fourth proportional to 122,586.48, 169,170 and 68,873.76 is: 95,046.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,586.48 : 169,170 = 68,873.76 : x
  2. Step 2: Convert to fraction form
    122,586.48/169,170 = 68,873.76/x
  3. Step 3: Cross multiply
    122,586.48x = 169,170 × 68,873.76
  4. Step 4: Simplify right side
    122,586.48x = 11,651,373,979.20
  5. Step 5: Solve for x
    x = 11,651,373,979.20/122,586.48
  6. Step 6: Final answer
    x = 95,046.16

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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.