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Finding the Fourth Proportional to 122,633.64, 169,249.55 and 68,917.50

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Solution

The fourth proportional to 122,633.64, 169,249.55 and 68,917.50 is: 95,114.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,633.64 : 169,249.55 = 68,917.50 : x
  2. Step 2: Convert to fraction form
    122,633.64/169,249.55 = 68,917.50/x
  3. Step 3: Cross multiply
    122,633.64x = 169,249.55 × 68,917.50
  4. Step 4: Simplify right side
    122,633.64x = 11,664,255,517.54
  5. Step 5: Solve for x
    x = 11,664,255,517.54/122,633.64
  6. Step 6: Final answer
    x = 95,114.65

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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.