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Finding the Fourth Proportional to 159,910.54, 220,689.49 and 91,949.60

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Solution

The fourth proportional to 159,910.54, 220,689.49 and 91,949.60 is: 126,897.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,910.54 : 220,689.49 = 91,949.60 : x
  2. Step 2: Convert to fraction form
    159,910.54/220,689.49 = 91,949.60/x
  3. Step 3: Cross multiply
    159,910.54x = 220,689.49 × 91,949.60
  4. Step 4: Simplify right side
    159,910.54x = 20,292,309,091.21
  5. Step 5: Solve for x
    x = 20,292,309,091.21/159,910.54
  6. Step 6: Final answer
    x = 126,897.89

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1.5x scale

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.