Home / 140,645.18-194,051.97-80,193.78

Finding the Fourth Proportional to 140,645.18, 194,051.97 and 80,193.78

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Solution

The fourth proportional to 140,645.18, 194,051.97 and 80,193.78 is: 110,645.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,645.18 : 194,051.97 = 80,193.78 : x
  2. Step 2: Convert to fraction form
    140,645.18/194,051.97 = 80,193.78/x
  3. Step 3: Cross multiply
    140,645.18x = 194,051.97 × 80,193.78
  4. Step 4: Simplify right side
    140,645.18x = 15,561,760,990.75
  5. Step 5: Solve for x
    x = 15,561,760,990.75/140,645.18
  6. Step 6: Final answer
    x = 110,645.53

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1.5x scale

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.