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Finding the Fourth Proportional to 135,396.34, 203,005.95 and 127,961.62

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Solution

The fourth proportional to 135,396.34, 203,005.95 and 127,961.62 is: 191,858.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,396.34 : 203,005.95 = 127,961.62 : x
  2. Step 2: Convert to fraction form
    135,396.34/203,005.95 = 127,961.62/x
  3. Step 3: Cross multiply
    135,396.34x = 203,005.95 × 127,961.62
  4. Step 4: Simplify right side
    135,396.34x = 25,976,970,231.64
  5. Step 5: Solve for x
    x = 25,976,970,231.64/135,396.34
  6. Step 6: Final answer
    x = 191,858.73

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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.