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Finding the Fourth Proportional to 103,481.80, 155,184.30 and 41,139.40

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Solution

The fourth proportional to 103,481.80, 155,184.30 and 41,139.40 is: 61,693.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,481.80 : 155,184.30 = 41,139.40 : x
  2. Step 2: Convert to fraction form
    103,481.80/155,184.30 = 41,139.40/x
  3. Step 3: Cross multiply
    103,481.80x = 155,184.30 × 41,139.40
  4. Step 4: Simplify right side
    103,481.80x = 6,384,188,991.42
  5. Step 5: Solve for x
    x = 6,384,188,991.42/103,481.80
  6. Step 6: Final answer
    x = 61,693.83

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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.