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Finding the Fourth Proportional to 103,183.36, 154,765.44 and 28,300.80

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Solution

The fourth proportional to 103,183.36, 154,765.44 and 28,300.80 is: 42,448.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,183.36 : 154,765.44 = 28,300.80 : x
  2. Step 2: Convert to fraction form
    103,183.36/154,765.44 = 28,300.80/x
  3. Step 3: Cross multiply
    103,183.36x = 154,765.44 × 28,300.80
  4. Step 4: Simplify right side
    103,183.36x = 4,379,985,764.35
  5. Step 5: Solve for x
    x = 4,379,985,764.35/103,183.36
  6. Step 6: Final answer
    x = 42,448.57

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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.