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Finding the Fourth Proportional to 212,418.64, 293,103.42 and 121,757.92

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Solution

The fourth proportional to 212,418.64, 293,103.42 and 121,757.92 is: 168,006.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,418.64 : 293,103.42 = 121,757.92 : x
  2. Step 2: Convert to fraction form
    212,418.64/293,103.42 = 121,757.92/x
  3. Step 3: Cross multiply
    212,418.64x = 293,103.42 × 121,757.92
  4. Step 4: Simplify right side
    212,418.64x = 35,687,662,764.09
  5. Step 5: Solve for x
    x = 35,687,662,764.09/212,418.64
  6. Step 6: Final answer
    x = 168,006.27

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