Home / 209,086.92-313,650.90-120,168.36

Finding the Fourth Proportional to 209,086.92, 313,650.90 and 120,168.36

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Solution

The fourth proportional to 209,086.92, 313,650.90 and 120,168.36 is: 180,264.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,086.92 : 313,650.90 = 120,168.36 : x
  2. Step 2: Convert to fraction form
    209,086.92/313,650.90 = 120,168.36/x
  3. Step 3: Cross multiply
    209,086.92x = 313,650.90 × 120,168.36
  4. Step 4: Simplify right side
    209,086.92x = 37,690,914,265.52
  5. Step 5: Solve for x
    x = 37,690,914,265.52/209,086.92
  6. Step 6: Final answer
    x = 180,264.33

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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.