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Finding the Fourth Proportional to 123,425.82, 170,327.59 and 66,837.18

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Solution

The fourth proportional to 123,425.82, 170,327.59 and 66,837.18 is: 92,235.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,425.82 : 170,327.59 = 66,837.18 : x
  2. Step 2: Convert to fraction form
    123,425.82/170,327.59 = 66,837.18/x
  3. Step 3: Cross multiply
    123,425.82x = 170,327.59 × 66,837.18
  4. Step 4: Simplify right side
    123,425.82x = 11,384,215,791.80
  5. Step 5: Solve for x
    x = 11,384,215,791.80/123,425.82
  6. Step 6: Final answer
    x = 92,235.29

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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.