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Finding the Fourth Proportional to 123,183.40, 184,515.90 and 102,447.40

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Solution

The fourth proportional to 123,183.40, 184,515.90 and 102,447.40 is: 153,455.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,183.40 : 184,515.90 = 102,447.40 : x
  2. Step 2: Convert to fraction form
    123,183.40/184,515.90 = 102,447.40/x
  3. Step 3: Cross multiply
    123,183.40x = 184,515.90 × 102,447.40
  4. Step 4: Simplify right side
    123,183.40x = 18,903,174,213.66
  5. Step 5: Solve for x
    x = 18,903,174,213.66/123,183.40
  6. Step 6: Final answer
    x = 153,455.53

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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.