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Finding the Fourth Proportional to 123,126.42, 169,914.42 and 66,537.75

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Solution

The fourth proportional to 123,126.42, 169,914.42 and 66,537.75 is: 91,822.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,126.42 : 169,914.42 = 66,537.75 : x
  2. Step 2: Convert to fraction form
    123,126.42/169,914.42 = 66,537.75/x
  3. Step 3: Cross multiply
    123,126.42x = 169,914.42 × 66,537.75
  4. Step 4: Simplify right side
    123,126.42x = 11,305,723,199.36
  5. Step 5: Solve for x
    x = 11,305,723,199.36/123,126.42
  6. Step 6: Final answer
    x = 91,822.07

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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.