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Finding the Fourth Proportional to 123,507.82, 170,418.35 and 69,060.97

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Solution

The fourth proportional to 123,507.82, 170,418.35 and 69,060.97 is: 95,291.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,507.82 : 170,418.35 = 69,060.97 : x
  2. Step 2: Convert to fraction form
    123,507.82/170,418.35 = 69,060.97/x
  3. Step 3: Cross multiply
    123,507.82x = 170,418.35 × 69,060.97
  4. Step 4: Simplify right side
    123,507.82x = 11,769,256,556.80
  5. Step 5: Solve for x
    x = 11,769,256,556.80/123,507.82
  6. Step 6: Final answer
    x = 95,291.59

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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.