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Finding the Fourth Proportional to 168,012.60, 252,091.80 and 84,906.60

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Solution

The fourth proportional to 168,012.60, 252,091.80 and 84,906.60 is: 127,396.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,012.60 : 252,091.80 = 84,906.60 : x
  2. Step 2: Convert to fraction form
    168,012.60/252,091.80 = 84,906.60/x
  3. Step 3: Cross multiply
    168,012.60x = 252,091.80 × 84,906.60
  4. Step 4: Simplify right side
    168,012.60x = 21,404,257,625.88
  5. Step 5: Solve for x
    x = 21,404,257,625.88/168,012.60
  6. Step 6: Final answer
    x = 127,396.74

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1.5x scale

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.