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Finding the Fourth Proportional to 203,634.14, 305,310.87 and 89,726.67

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Solution

The fourth proportional to 203,634.14, 305,310.87 and 89,726.67 is: 134,528.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,634.14 : 305,310.87 = 89,726.67 : x
  2. Step 2: Convert to fraction form
    203,634.14/305,310.87 = 89,726.67/x
  3. Step 3: Cross multiply
    203,634.14x = 305,310.87 × 89,726.67
  4. Step 4: Simplify right side
    203,634.14x = 27,394,527,679.90
  5. Step 5: Solve for x
    x = 27,394,527,679.90/203,634.14
  6. Step 6: Final answer
    x = 134,528.17

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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.