Home / 138,286.95-190,859.82-80,135.54

Finding the Fourth Proportional to 138,286.95, 190,859.82 and 80,135.54

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Solution

The fourth proportional to 138,286.95, 190,859.82 and 80,135.54 is: 110,600.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,286.95 : 190,859.82 = 80,135.54 : x
  2. Step 2: Convert to fraction form
    138,286.95/190,859.82 = 80,135.54/x
  3. Step 3: Cross multiply
    138,286.95x = 190,859.82 × 80,135.54
  4. Step 4: Simplify right side
    138,286.95x = 15,294,653,785.70
  5. Step 5: Solve for x
    x = 15,294,653,785.70/138,286.95
  6. Step 6: Final answer
    x = 110,600.85

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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.