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Finding the Fourth Proportional to 99,487.44, 149,231 and 68,227.92

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Solution

The fourth proportional to 99,487.44, 149,231 and 68,227.92 is: 102,341.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,487.44 : 149,231 = 68,227.92 : x
  2. Step 2: Convert to fraction form
    99,487.44/149,231 = 68,227.92/x
  3. Step 3: Cross multiply
    99,487.44x = 149,231 × 68,227.92
  4. Step 4: Simplify right side
    99,487.44x = 10,181,720,729.52
  5. Step 5: Solve for x
    x = 10,181,720,729.52/99,487.44
  6. Step 6: Final answer
    x = 102,341.77

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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.