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Finding the Fourth Proportional to 169,645.93, 254,081.21 and 80,961.72

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Solution

The fourth proportional to 169,645.93, 254,081.21 and 80,961.72 is: 121,257.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,645.93 : 254,081.21 = 80,961.72 : x
  2. Step 2: Convert to fraction form
    169,645.93/254,081.21 = 80,961.72/x
  3. Step 3: Cross multiply
    169,645.93x = 254,081.21 × 80,961.72
  4. Step 4: Simplify right side
    169,645.93x = 20,570,850,510.88
  5. Step 5: Solve for x
    x = 20,570,850,510.88/169,645.93
  6. Step 6: Final answer
    x = 121,257.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.