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Finding the Fourth Proportional to 122,098.74, 168,495.03 and 68,383.86

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Solution

The fourth proportional to 122,098.74, 168,495.03 and 68,383.86 is: 94,369.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,098.74 : 168,495.03 = 68,383.86 : x
  2. Step 2: Convert to fraction form
    122,098.74/168,495.03 = 68,383.86/x
  3. Step 3: Cross multiply
    122,098.74x = 168,495.03 × 68,383.86
  4. Step 4: Simplify right side
    122,098.74x = 11,522,340,542.22
  5. Step 5: Solve for x
    x = 11,522,340,542.22/122,098.74
  6. Step 6: Final answer
    x = 94,369.04

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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.