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Finding the Fourth Proportional to 135,999.20, 203,998.80 and 135,999.20

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Solution

The fourth proportional to 135,999.20, 203,998.80 and 135,999.20 is: 203,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,999.20 : 203,998.80 = 135,999.20 : x
  2. Step 2: Convert to fraction form
    135,999.20/203,998.80 = 135,999.20/x
  3. Step 3: Cross multiply
    135,999.20x = 203,998.80 × 135,999.20
  4. Step 4: Simplify right side
    135,999.20x = 27,743,673,600.96
  5. Step 5: Solve for x
    x = 27,743,673,600.96/135,999.20
  6. Step 6: Final answer
    x = 203,998.80

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1.5x scale

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.