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Finding the Fourth Proportional to 123,455.53, 185,198.13 and 43,476.97

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Solution

The fourth proportional to 123,455.53, 185,198.13 and 43,476.97 is: 65,220.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,455.53 : 185,198.13 = 43,476.97 : x
  2. Step 2: Convert to fraction form
    123,455.53/185,198.13 = 43,476.97/x
  3. Step 3: Cross multiply
    123,455.53x = 185,198.13 × 43,476.97
  4. Step 4: Simplify right side
    123,455.53x = 8,051,853,542.07
  5. Step 5: Solve for x
    x = 8,051,853,542.07/123,455.53
  6. Step 6: Final answer
    x = 65,220.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.