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Finding the Fourth Proportional to 159,645.90, 220,321.26 and 88,025.84

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Solution

The fourth proportional to 159,645.90, 220,321.26 and 88,025.84 is: 121,481.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,645.90 : 220,321.26 = 88,025.84 : x
  2. Step 2: Convert to fraction form
    159,645.90/220,321.26 = 88,025.84/x
  3. Step 3: Cross multiply
    159,645.90x = 220,321.26 × 88,025.84
  4. Step 4: Simplify right side
    159,645.90x = 19,393,962,879.75
  5. Step 5: Solve for x
    x = 19,393,962,879.75/159,645.90
  6. Step 6: Final answer
    x = 121,481.12

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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.