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Finding the Fourth Proportional to 133,093.88, 183,670.17 and 72,665.90

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Solution

The fourth proportional to 133,093.88, 183,670.17 and 72,665.90 is: 100,279.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,093.88 : 183,670.17 = 72,665.90 : x
  2. Step 2: Convert to fraction form
    133,093.88/183,670.17 = 72,665.90/x
  3. Step 3: Cross multiply
    133,093.88x = 183,670.17 × 72,665.90
  4. Step 4: Simplify right side
    133,093.88x = 13,346,557,842.87
  5. Step 5: Solve for x
    x = 13,346,557,842.87/133,093.88
  6. Step 6: Final answer
    x = 100,279.28

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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.