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Finding the Fourth Proportional to 123,999.27, 185,992.25 and 72,736.47

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Solution

The fourth proportional to 123,999.27, 185,992.25 and 72,736.47 is: 109,100.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,999.27 : 185,992.25 = 72,736.47 : x
  2. Step 2: Convert to fraction form
    123,999.27/185,992.25 = 72,736.47/x
  3. Step 3: Cross multiply
    123,999.27x = 185,992.25 × 72,736.47
  4. Step 4: Simplify right side
    123,999.27x = 13,528,419,348.68
  5. Step 5: Solve for x
    x = 13,528,419,348.68/123,999.27
  6. Step 6: Final answer
    x = 109,100.80

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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.