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Finding the Fourth Proportional to 168,331.60, 252,497.40 and 85,214.80

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Solution

The fourth proportional to 168,331.60, 252,497.40 and 85,214.80 is: 127,822.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,331.60 : 252,497.40 = 85,214.80 : x
  2. Step 2: Convert to fraction form
    168,331.60/252,497.40 = 85,214.80/x
  3. Step 3: Cross multiply
    168,331.60x = 252,497.40 × 85,214.80
  4. Step 4: Simplify right side
    168,331.60x = 21,516,515,441.52
  5. Step 5: Solve for x
    x = 21,516,515,441.52/168,331.60
  6. Step 6: Final answer
    x = 127,822.20

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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.