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Finding the Fourth Proportional to 188,279, 259,760.06 and 120,335.74

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Solution

The fourth proportional to 188,279, 259,760.06 and 120,335.74 is: 166,021.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,279 : 259,760.06 = 120,335.74 : x
  2. Step 2: Convert to fraction form
    188,279/259,760.06 = 120,335.74/x
  3. Step 3: Cross multiply
    188,279x = 259,760.06 × 120,335.74
  4. Step 4: Simplify right side
    188,279x = 31,258,419,042.54
  5. Step 5: Solve for x
    x = 31,258,419,042.54/188,279
  6. Step 6: Final answer
    x = 166,021.80

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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.