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Finding the Fourth Proportional to 133,690.75, 184,493.24 and 79,978.03

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Solution

The fourth proportional to 133,690.75, 184,493.24 and 79,978.03 is: 110,369.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,690.75 : 184,493.24 = 79,978.03 : x
  2. Step 2: Convert to fraction form
    133,690.75/184,493.24 = 79,978.03/x
  3. Step 3: Cross multiply
    133,690.75x = 184,493.24 × 79,978.03
  4. Step 4: Simplify right side
    133,690.75x = 14,755,405,883.52
  5. Step 5: Solve for x
    x = 14,755,405,883.52/133,690.75
  6. Step 6: Final answer
    x = 110,369.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.