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Finding the Fourth Proportional to 168,587.60, 252,954.30 and 85,481.60

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Solution

The fourth proportional to 168,587.60, 252,954.30 and 85,481.60 is: 128,259.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,587.60 : 252,954.30 = 85,481.60 : x
  2. Step 2: Convert to fraction form
    168,587.60/252,954.30 = 85,481.60/x
  3. Step 3: Cross multiply
    168,587.60x = 252,954.30 × 85,481.60
  4. Step 4: Simplify right side
    168,587.60x = 21,622,938,290.88
  5. Step 5: Solve for x
    x = 21,622,938,290.88/168,587.60
  6. Step 6: Final answer
    x = 128,259.36

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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.