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Finding the Fourth Proportional to 202,107.72, 303,078.06 and 68,998.68

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Solution

The fourth proportional to 202,107.72, 303,078.06 and 68,998.68 is: 103,469.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,107.72 : 303,078.06 = 68,998.68 : x
  2. Step 2: Convert to fraction form
    202,107.72/303,078.06 = 68,998.68/x
  3. Step 3: Cross multiply
    202,107.72x = 303,078.06 × 68,998.68
  4. Step 4: Simplify right side
    202,107.72x = 20,911,986,076.96
  5. Step 5: Solve for x
    x = 20,911,986,076.96/202,107.72
  6. Step 6: Final answer
    x = 103,469.51

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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.