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Finding the Fourth Proportional to 135,974.40, 203,762.40 and 121,934.40

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Solution

The fourth proportional to 135,974.40, 203,762.40 and 121,934.40 is: 182,722.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,974.40 : 203,762.40 = 121,934.40 : x
  2. Step 2: Convert to fraction form
    135,974.40/203,762.40 = 121,934.40/x
  3. Step 3: Cross multiply
    135,974.40x = 203,762.40 × 121,934.40
  4. Step 4: Simplify right side
    135,974.40x = 24,845,645,986.56
  5. Step 5: Solve for x
    x = 24,845,645,986.56/135,974.40
  6. Step 6: Final answer
    x = 182,722.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.