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Finding the Fourth Proportional to 110,370.60, 165,639.74 and 80,865.54

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Solution

The fourth proportional to 110,370.60, 165,639.74 and 80,865.54 is: 121,359.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,370.60 : 165,639.74 = 80,865.54 : x
  2. Step 2: Convert to fraction form
    110,370.60/165,639.74 = 80,865.54/x
  3. Step 3: Cross multiply
    110,370.60x = 165,639.74 × 80,865.54
  4. Step 4: Simplify right side
    110,370.60x = 13,394,546,616.23
  5. Step 5: Solve for x
    x = 13,394,546,616.23/110,370.60
  6. Step 6: Final answer
    x = 121,359.73

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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.