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Finding the Fourth Proportional to 135,938.60, 203,907.90 and 133,605.80

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Solution

The fourth proportional to 135,938.60, 203,907.90 and 133,605.80 is: 200,408.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,938.60 : 203,907.90 = 133,605.80 : x
  2. Step 2: Convert to fraction form
    135,938.60/203,907.90 = 133,605.80/x
  3. Step 3: Cross multiply
    135,938.60x = 203,907.90 × 133,605.80
  4. Step 4: Simplify right side
    135,938.60x = 27,243,278,105.82
  5. Step 5: Solve for x
    x = 27,243,278,105.82/135,938.60
  6. Step 6: Final answer
    x = 200,408.70

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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.