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Finding the Fourth Proportional to 149,910.66, 206,879.22 and 89,469.54

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Solution

The fourth proportional to 149,910.66, 206,879.22 and 89,469.54 is: 123,469.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,910.66 : 206,879.22 = 89,469.54 : x
  2. Step 2: Convert to fraction form
    149,910.66/206,879.22 = 89,469.54/x
  3. Step 3: Cross multiply
    149,910.66x = 206,879.22 × 89,469.54
  4. Step 4: Simplify right side
    149,910.66x = 18,509,388,648.96
  5. Step 5: Solve for x
    x = 18,509,388,648.96/149,910.66
  6. Step 6: Final answer
    x = 123,469.46

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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.