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Finding the Fourth Proportional to 110,481.60, 165,722.40 and 80,414.40

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Solution

The fourth proportional to 110,481.60, 165,722.40 and 80,414.40 is: 120,621.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,481.60 : 165,722.40 = 80,414.40 : x
  2. Step 2: Convert to fraction form
    110,481.60/165,722.40 = 80,414.40/x
  3. Step 3: Cross multiply
    110,481.60x = 165,722.40 × 80,414.40
  4. Step 4: Simplify right side
    110,481.60x = 13,326,467,362.56
  5. Step 5: Solve for x
    x = 13,326,467,362.56/110,481.60
  6. Step 6: Final answer
    x = 120,621.60

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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.