Home / 140,562.24-193,961.92-80,128

Finding the Fourth Proportional to 140,562.24, 193,961.92 and 80,128

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Solution

The fourth proportional to 140,562.24, 193,961.92 and 80,128 is: 110,568.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,562.24 : 193,961.92 = 80,128 : x
  2. Step 2: Convert to fraction form
    140,562.24/193,961.92 = 80,128/x
  3. Step 3: Cross multiply
    140,562.24x = 193,961.92 × 80,128
  4. Step 4: Simplify right side
    140,562.24x = 15,541,780,725.76
  5. Step 5: Solve for x
    x = 15,541,780,725.76/140,562.24
  6. Step 6: Final answer
    x = 110,568.68

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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.