Home / 209,134.20-313,701.30-68,874.60

Finding the Fourth Proportional to 209,134.20, 313,701.30 and 68,874.60

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Solution

The fourth proportional to 209,134.20, 313,701.30 and 68,874.60 is: 103,311.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,134.20 : 313,701.30 = 68,874.60 : x
  2. Step 2: Convert to fraction form
    209,134.20/313,701.30 = 68,874.60/x
  3. Step 3: Cross multiply
    209,134.20x = 313,701.30 × 68,874.60
  4. Step 4: Simplify right side
    209,134.20x = 21,606,051,556.98
  5. Step 5: Solve for x
    x = 21,606,051,556.98/209,134.20
  6. Step 6: Final answer
    x = 103,311.90

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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.