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Finding the Fourth Proportional to 123,198.84, 170,014.68 and 66,610.44

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Solution

The fourth proportional to 123,198.84, 170,014.68 and 66,610.44 is: 91,922.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,198.84 : 170,014.68 = 66,610.44 : x
  2. Step 2: Convert to fraction form
    123,198.84/170,014.68 = 66,610.44/x
  3. Step 3: Cross multiply
    123,198.84x = 170,014.68 × 66,610.44
  4. Step 4: Simplify right side
    123,198.84x = 11,324,752,641.26
  5. Step 5: Solve for x
    x = 11,324,752,641.26/123,198.84
  6. Step 6: Final answer
    x = 91,922.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.