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Finding the Fourth Proportional to 103,910.76, 155,896.92 and 43,945.11

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Solution

The fourth proportional to 103,910.76, 155,896.92 and 43,945.11 is: 65,930.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,910.76 : 155,896.92 = 43,945.11 : x
  2. Step 2: Convert to fraction form
    103,910.76/155,896.92 = 43,945.11/x
  3. Step 3: Cross multiply
    103,910.76x = 155,896.92 × 43,945.11
  4. Step 4: Simplify right side
    103,910.76x = 6,850,907,298.06
  5. Step 5: Solve for x
    x = 6,850,907,298.06/103,910.76
  6. Step 6: Final answer
    x = 65,930.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.