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Finding the Fourth Proportional to 202,137.40, 303,233.10 and 68,984.20

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Solution

The fourth proportional to 202,137.40, 303,233.10 and 68,984.20 is: 103,485.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,137.40 : 303,233.10 = 68,984.20 : x
  2. Step 2: Convert to fraction form
    202,137.40/303,233.10 = 68,984.20/x
  3. Step 3: Cross multiply
    202,137.40x = 303,233.10 × 68,984.20
  4. Step 4: Simplify right side
    202,137.40x = 20,918,292,817.02
  5. Step 5: Solve for x
    x = 20,918,292,817.02/202,137.40
  6. Step 6: Final answer
    x = 103,485.51

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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.