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Finding the Fourth Proportional to 103,812.94, 155,816.26 and 53,249.92

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Solution

The fourth proportional to 103,812.94, 155,816.26 and 53,249.92 is: 79,924.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,812.94 : 155,816.26 = 53,249.92 : x
  2. Step 2: Convert to fraction form
    103,812.94/155,816.26 = 53,249.92/x
  3. Step 3: Cross multiply
    103,812.94x = 155,816.26 × 53,249.92
  4. Step 4: Simplify right side
    103,812.94x = 8,297,203,379.70
  5. Step 5: Solve for x
    x = 8,297,203,379.70/103,812.94
  6. Step 6: Final answer
    x = 79,924.56

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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.