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Finding the Fourth Proportional to 168,584.60, 252,949.80 and 85,478.60

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Solution

The fourth proportional to 168,584.60, 252,949.80 and 85,478.60 is: 128,254.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,584.60 : 252,949.80 = 85,478.60 : x
  2. Step 2: Convert to fraction form
    168,584.60/252,949.80 = 85,478.60/x
  3. Step 3: Cross multiply
    168,584.60x = 252,949.80 × 85,478.60
  4. Step 4: Simplify right side
    168,584.60x = 21,621,794,774.28
  5. Step 5: Solve for x
    x = 21,621,794,774.28/168,584.60
  6. Step 6: Final answer
    x = 128,254.86

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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.