Home / 140,912.10-194,460.30-80,490.78

Finding the Fourth Proportional to 140,912.10, 194,460.30 and 80,490.78

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Solution

The fourth proportional to 140,912.10, 194,460.30 and 80,490.78 is: 111,078.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,912.10 : 194,460.30 = 80,490.78 : x
  2. Step 2: Convert to fraction form
    140,912.10/194,460.30 = 80,490.78/x
  3. Step 3: Cross multiply
    140,912.10x = 194,460.30 × 80,490.78
  4. Step 4: Simplify right side
    140,912.10x = 15,652,261,226.03
  5. Step 5: Solve for x
    x = 15,652,261,226.03/140,912.10
  6. Step 6: Final answer
    x = 111,078.19

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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.