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Finding the Fourth Proportional to 135,408, 203,112 and 36,912

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Solution

The fourth proportional to 135,408, 203,112 and 36,912 is: 55,368

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,408 : 203,112 = 36,912 : x
  2. Step 2: Convert to fraction form
    135,408/203,112 = 36,912/x
  3. Step 3: Cross multiply
    135,408x = 203,112 × 36,912
  4. Step 4: Simplify right side
    135,408x = 7,497,270,144
  5. Step 5: Solve for x
    x = 7,497,270,144/135,408
  6. Step 6: Final answer
    x = 55,368

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.