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Finding the Fourth Proportional to 123,247.53, 184,947.83 and 78,906.11

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Solution

The fourth proportional to 123,247.53, 184,947.83 and 78,906.11 is: 118,408.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,247.53 : 184,947.83 = 78,906.11 : x
  2. Step 2: Convert to fraction form
    123,247.53/184,947.83 = 78,906.11/x
  3. Step 3: Cross multiply
    123,247.53x = 184,947.83 × 78,906.11
  4. Step 4: Simplify right side
    123,247.53x = 14,593,512,498.97
  5. Step 5: Solve for x
    x = 14,593,512,498.97/123,247.53
  6. Step 6: Final answer
    x = 118,408.15

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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.