Home / 140,921.79-194,450.91-80,479.56

Finding the Fourth Proportional to 140,921.79, 194,450.91 and 80,479.56

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Solution

The fourth proportional to 140,921.79, 194,450.91 and 80,479.56 is: 111,049.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,921.79 : 194,450.91 = 80,479.56 : x
  2. Step 2: Convert to fraction form
    140,921.79/194,450.91 = 80,479.56/x
  3. Step 3: Cross multiply
    140,921.79x = 194,450.91 × 80,479.56
  4. Step 4: Simplify right side
    140,921.79x = 15,649,323,678.40
  5. Step 5: Solve for x
    x = 15,649,323,678.40/140,921.79
  6. Step 6: Final answer
    x = 111,049.71

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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.