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Finding the Fourth Proportional to 123,620.60, 185,625.30 and 71,132.60

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Solution

The fourth proportional to 123,620.60, 185,625.30 and 71,132.60 is: 106,810.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,620.60 : 185,625.30 = 71,132.60 : x
  2. Step 2: Convert to fraction form
    123,620.60/185,625.30 = 71,132.60/x
  3. Step 3: Cross multiply
    123,620.60x = 185,625.30 × 71,132.60
  4. Step 4: Simplify right side
    123,620.60x = 13,204,010,214.78
  5. Step 5: Solve for x
    x = 13,204,010,214.78/123,620.60
  6. Step 6: Final answer
    x = 106,810.76

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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.