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Finding the Fourth Proportional to 202,107.40, 303,188.10 and 68,954.20

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Solution

The fourth proportional to 202,107.40, 303,188.10 and 68,954.20 is: 103,440.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,107.40 : 303,188.10 = 68,954.20 : x
  2. Step 2: Convert to fraction form
    202,107.40/303,188.10 = 68,954.20/x
  3. Step 3: Cross multiply
    202,107.40x = 303,188.10 × 68,954.20
  4. Step 4: Simplify right side
    202,107.40x = 20,906,092,885.02
  5. Step 5: Solve for x
    x = 20,906,092,885.02/202,107.40
  6. Step 6: Final answer
    x = 103,440.51

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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.