Home / 187,974.64-259,418.72-107,400.43

Finding the Fourth Proportional to 187,974.64, 259,418.72 and 107,400.43

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Solution

The fourth proportional to 187,974.64, 259,418.72 and 107,400.43 is: 148,220.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,974.64 : 259,418.72 = 107,400.43 : x
  2. Step 2: Convert to fraction form
    187,974.64/259,418.72 = 107,400.43/x
  3. Step 3: Cross multiply
    187,974.64x = 259,418.72 × 107,400.43
  4. Step 4: Simplify right side
    187,974.64x = 27,861,682,078.05
  5. Step 5: Solve for x
    x = 27,861,682,078.05/187,974.64
  6. Step 6: Final answer
    x = 148,220.43

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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.