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Finding the Fourth Proportional to 135,952.40, 203,729.40 and 121,912.40

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Solution

The fourth proportional to 135,952.40, 203,729.40 and 121,912.40 is: 182,689.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,952.40 : 203,729.40 = 121,912.40 : x
  2. Step 2: Convert to fraction form
    135,952.40/203,729.40 = 121,912.40/x
  3. Step 3: Cross multiply
    135,952.40x = 203,729.40 × 121,912.40
  4. Step 4: Simplify right side
    135,952.40x = 24,837,140,104.56
  5. Step 5: Solve for x
    x = 24,837,140,104.56/135,952.40
  6. Step 6: Final answer
    x = 182,689.97

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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.