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Finding the Fourth Proportional to 135,386, 203,079 and 36,890

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Solution

The fourth proportional to 135,386, 203,079 and 36,890 is: 55,335

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,386 : 203,079 = 36,890 : x
  2. Step 2: Convert to fraction form
    135,386/203,079 = 36,890/x
  3. Step 3: Cross multiply
    135,386x = 203,079 × 36,890
  4. Step 4: Simplify right side
    135,386x = 7,491,584,310
  5. Step 5: Solve for x
    x = 7,491,584,310/135,386
  6. Step 6: Final answer
    x = 55,335

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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.