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Finding the Fourth Proportional to 122,272.72, 168,736.32 and 68,557.73

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Solution

The fourth proportional to 122,272.72, 168,736.32 and 68,557.73 is: 94,609.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,272.72 : 168,736.32 = 68,557.73 : x
  2. Step 2: Convert to fraction form
    122,272.72/168,736.32 = 68,557.73/x
  3. Step 3: Cross multiply
    122,272.72x = 168,736.32 × 68,557.73
  4. Step 4: Simplify right side
    122,272.72x = 11,568,179,067.75
  5. Step 5: Solve for x
    x = 11,568,179,067.75/122,272.72
  6. Step 6: Final answer
    x = 94,609.65

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1.5x scale

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.