Home / 123,380.42-170,265.53-66,791.79

Finding the Fourth Proportional to 123,380.42, 170,265.53 and 66,791.79

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Solution

The fourth proportional to 123,380.42, 170,265.53 and 66,791.79 is: 92,172.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,380.42 : 170,265.53 = 66,791.79 : x
  2. Step 2: Convert to fraction form
    123,380.42/170,265.53 = 66,791.79/x
  3. Step 3: Cross multiply
    123,380.42x = 170,265.53 × 66,791.79
  4. Step 4: Simplify right side
    123,380.42x = 11,372,339,190.04
  5. Step 5: Solve for x
    x = 11,372,339,190.04/123,380.42
  6. Step 6: Final answer
    x = 92,172.97

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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.