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Finding the Fourth Proportional to 133,186.22, 183,794.72 and 72,755.31

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Solution

The fourth proportional to 133,186.22, 183,794.72 and 72,755.31 is: 100,401.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,186.22 : 183,794.72 = 72,755.31 : x
  2. Step 2: Convert to fraction form
    133,186.22/183,794.72 = 72,755.31/x
  3. Step 3: Cross multiply
    133,186.22x = 183,794.72 × 72,755.31
  4. Step 4: Simplify right side
    133,186.22x = 13,372,042,564.67
  5. Step 5: Solve for x
    x = 13,372,042,564.67/133,186.22
  6. Step 6: Final answer
    x = 100,401.09

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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.