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Finding the Fourth Proportional to 135,998.40, 204,026.40 and 41,220.80

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Solution

The fourth proportional to 135,998.40, 204,026.40 and 41,220.80 is: 61,839.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,998.40 : 204,026.40 = 41,220.80 : x
  2. Step 2: Convert to fraction form
    135,998.40/204,026.40 = 41,220.80/x
  3. Step 3: Cross multiply
    135,998.40x = 204,026.40 × 41,220.80
  4. Step 4: Simplify right side
    135,998.40x = 8,410,131,429.12
  5. Step 5: Solve for x
    x = 8,410,131,429.12/135,998.40
  6. Step 6: Final answer
    x = 61,839.93

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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.