Home / 138,249.92-190,770.19-77,819.54

Finding the Fourth Proportional to 138,249.92, 190,770.19 and 77,819.54

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Solution

The fourth proportional to 138,249.92, 190,770.19 and 77,819.54 is: 107,382.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,249.92 : 190,770.19 = 77,819.54 : x
  2. Step 2: Convert to fraction form
    138,249.92/190,770.19 = 77,819.54/x
  3. Step 3: Cross multiply
    138,249.92x = 190,770.19 × 77,819.54
  4. Step 4: Simplify right side
    138,249.92x = 14,845,647,283.11
  5. Step 5: Solve for x
    x = 14,845,647,283.11/138,249.92
  6. Step 6: Final answer
    x = 107,382.68

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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.