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Finding the Fourth Proportional to 123,338.40, 170,207.01 and 66,749.78

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Solution

The fourth proportional to 123,338.40, 170,207.01 and 66,749.78 is: 92,114.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,338.40 : 170,207.01 = 66,749.78 : x
  2. Step 2: Convert to fraction form
    123,338.40/170,207.01 = 66,749.78/x
  3. Step 3: Cross multiply
    123,338.40x = 170,207.01 × 66,749.78
  4. Step 4: Simplify right side
    123,338.40x = 11,361,279,287.17
  5. Step 5: Solve for x
    x = 11,361,279,287.17/123,338.40
  6. Step 6: Final answer
    x = 92,114.70

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