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Finding the Fourth Proportional to 123,084.80, 184,481.40 and 91,883.60

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Solution

The fourth proportional to 123,084.80, 184,481.40 and 91,883.60 is: 137,716.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,084.80 : 184,481.40 = 91,883.60 : x
  2. Step 2: Convert to fraction form
    123,084.80/184,481.40 = 91,883.60/x
  3. Step 3: Cross multiply
    123,084.80x = 184,481.40 × 91,883.60
  4. Step 4: Simplify right side
    123,084.80x = 16,950,815,165.04
  5. Step 5: Solve for x
    x = 16,950,815,165.04/123,084.80
  6. Step 6: Final answer
    x = 137,716.56

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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.