Home / 209,145.38-313,767.27-68,904

Finding the Fourth Proportional to 209,145.38, 313,767.27 and 68,904

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Solution

The fourth proportional to 209,145.38, 313,767.27 and 68,904 is: 103,372.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,145.38 : 313,767.27 = 68,904 : x
  2. Step 2: Convert to fraction form
    209,145.38/313,767.27 = 68,904/x
  3. Step 3: Cross multiply
    209,145.38x = 313,767.27 × 68,904
  4. Step 4: Simplify right side
    209,145.38x = 21,619,819,972.08
  5. Step 5: Solve for x
    x = 21,619,819,972.08/209,145.38
  6. Step 6: Final answer
    x = 103,372.21

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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.