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Finding the Fourth Proportional to 123,077.12, 169,846.56 and 66,488.49

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Solution

The fourth proportional to 123,077.12, 169,846.56 and 66,488.49 is: 91,754.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,077.12 : 169,846.56 = 66,488.49 : x
  2. Step 2: Convert to fraction form
    123,077.12/169,846.56 = 66,488.49/x
  3. Step 3: Cross multiply
    123,077.12x = 169,846.56 × 66,488.49
  4. Step 4: Simplify right side
    123,077.12x = 11,292,841,306.09
  5. Step 5: Solve for x
    x = 11,292,841,306.09/123,077.12
  6. Step 6: Final answer
    x = 91,754.19

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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.