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Finding the Fourth Proportional to 117,097.78, 161,620.23 and 74,049.79

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Solution

The fourth proportional to 117,097.78, 161,620.23 and 74,049.79 is: 102,204.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,097.78 : 161,620.23 = 74,049.79 : x
  2. Step 2: Convert to fraction form
    117,097.78/161,620.23 = 74,049.79/x
  3. Step 3: Cross multiply
    117,097.78x = 161,620.23 × 74,049.79
  4. Step 4: Simplify right side
    117,097.78x = 11,967,944,091.25
  5. Step 5: Solve for x
    x = 11,967,944,091.25/117,097.78
  6. Step 6: Final answer
    x = 102,204.71

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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.