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Finding the Fourth Proportional to 133,167.62, 183,770.10 and 72,738.25

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Solution

The fourth proportional to 133,167.62, 183,770.10 and 72,738.25 is: 100,378.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,167.62 : 183,770.10 = 72,738.25 : x
  2. Step 2: Convert to fraction form
    133,167.62/183,770.10 = 72,738.25/x
  3. Step 3: Cross multiply
    133,167.62x = 183,770.10 × 72,738.25
  4. Step 4: Simplify right side
    133,167.62x = 13,367,115,112.63
  5. Step 5: Solve for x
    x = 13,367,115,112.63/133,167.62
  6. Step 6: Final answer
    x = 100,378.12

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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.