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Finding the Fourth Proportional to 159,910.50, 220,683.60 and 91,949.52

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Solution

The fourth proportional to 159,910.50, 220,683.60 and 91,949.52 is: 126,894.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,910.50 : 220,683.60 = 91,949.52 : x
  2. Step 2: Convert to fraction form
    159,910.50/220,683.60 = 91,949.52/x
  3. Step 3: Cross multiply
    159,910.50x = 220,683.60 × 91,949.52
  4. Step 4: Simplify right side
    159,910.50x = 20,291,751,091.87
  5. Step 5: Solve for x
    x = 20,291,751,091.87/159,910.50
  6. Step 6: Final answer
    x = 126,894.43

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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.