Home / 209,212.20-313,818.30-76,096.80

Finding the Fourth Proportional to 209,212.20, 313,818.30 and 76,096.80

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Solution

The fourth proportional to 209,212.20, 313,818.30 and 76,096.80 is: 114,145.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,212.20 : 313,818.30 = 76,096.80 : x
  2. Step 2: Convert to fraction form
    209,212.20/313,818.30 = 76,096.80/x
  3. Step 3: Cross multiply
    209,212.20x = 313,818.30 × 76,096.80
  4. Step 4: Simplify right side
    209,212.20x = 23,880,568,411.44
  5. Step 5: Solve for x
    x = 23,880,568,411.44/209,212.20
  6. Step 6: Final answer
    x = 114,145.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.