Home / 140,781.21-194,230.52-80,309.28

Finding the Fourth Proportional to 140,781.21, 194,230.52 and 80,309.28

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Solution

The fourth proportional to 140,781.21, 194,230.52 and 80,309.28 is: 110,799.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,781.21 : 194,230.52 = 80,309.28 : x
  2. Step 2: Convert to fraction form
    140,781.21/194,230.52 = 80,309.28/x
  3. Step 3: Cross multiply
    140,781.21x = 194,230.52 × 80,309.28
  4. Step 4: Simplify right side
    140,781.21x = 15,598,512,813.68
  5. Step 5: Solve for x
    x = 15,598,512,813.68/140,781.21
  6. Step 6: Final answer
    x = 110,799.68

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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.