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Finding the Fourth Proportional to 121,163.49, 167,221.32 and 69,500.73

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Solution

The fourth proportional to 121,163.49, 167,221.32 and 69,500.73 is: 95,920.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,163.49 : 167,221.32 = 69,500.73 : x
  2. Step 2: Convert to fraction form
    121,163.49/167,221.32 = 69,500.73/x
  3. Step 3: Cross multiply
    121,163.49x = 167,221.32 × 69,500.73
  4. Step 4: Simplify right side
    121,163.49x = 11,622,003,811.56
  5. Step 5: Solve for x
    x = 11,622,003,811.56/121,163.49
  6. Step 6: Final answer
    x = 95,920.02

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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.