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Finding the Fourth Proportional to 187,879.82, 259,268.76 and 107,305.68

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Solution

The fourth proportional to 187,879.82, 259,268.76 and 107,305.68 is: 148,078.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,879.82 : 259,268.76 = 107,305.68 : x
  2. Step 2: Convert to fraction form
    187,879.82/259,268.76 = 107,305.68/x
  3. Step 3: Cross multiply
    187,879.82x = 259,268.76 × 107,305.68
  4. Step 4: Simplify right side
    187,879.82x = 27,821,010,594.56
  5. Step 5: Solve for x
    x = 27,821,010,594.56/187,879.82
  6. Step 6: Final answer
    x = 148,078.76

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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.