Home / 143,686.20-198,286.74-80,029.56

Finding the Fourth Proportional to 143,686.20, 198,286.74 and 80,029.56

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Solution

The fourth proportional to 143,686.20, 198,286.74 and 80,029.56 is: 110,440.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,686.20 : 198,286.74 = 80,029.56 : x
  2. Step 2: Convert to fraction form
    143,686.20/198,286.74 = 80,029.56/x
  3. Step 3: Cross multiply
    143,686.20x = 198,286.74 × 80,029.56
  4. Step 4: Simplify right side
    143,686.20x = 15,868,800,556.03
  5. Step 5: Solve for x
    x = 15,868,800,556.03/143,686.20
  6. Step 6: Final answer
    x = 110,440.67

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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.