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Finding the Fourth Proportional to 99,363.78, 149,107.23 and 40,199.90

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Solution

The fourth proportional to 99,363.78, 149,107.23 and 40,199.90 is: 60,324.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,363.78 : 149,107.23 = 40,199.90 : x
  2. Step 2: Convert to fraction form
    99,363.78/149,107.23 = 40,199.90/x
  3. Step 3: Cross multiply
    99,363.78x = 149,107.23 × 40,199.90
  4. Step 4: Simplify right side
    99,363.78x = 5,994,094,989.74
  5. Step 5: Solve for x
    x = 5,994,094,989.74/99,363.78
  6. Step 6: Final answer
    x = 60,324.75

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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.