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Finding the Fourth Proportional to 103,249.79, 154,844.87 and 28,372.38

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Solution

The fourth proportional to 103,249.79, 154,844.87 and 28,372.38 is: 42,550.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,249.79 : 154,844.87 = 28,372.38 : x
  2. Step 2: Convert to fraction form
    103,249.79/154,844.87 = 28,372.38/x
  3. Step 3: Cross multiply
    103,249.79x = 154,844.87 × 28,372.38
  4. Step 4: Simplify right side
    103,249.79x = 4,393,316,770.16
  5. Step 5: Solve for x
    x = 4,393,316,770.16/103,249.79
  6. Step 6: Final answer
    x = 42,550.37

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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.