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Finding the Fourth Proportional to 135,919.40, 203,475.90 and 101,013.80

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Solution

The fourth proportional to 135,919.40, 203,475.90 and 101,013.80 is: 151,221.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,919.40 : 203,475.90 = 101,013.80 : x
  2. Step 2: Convert to fraction form
    135,919.40/203,475.90 = 101,013.80/x
  3. Step 3: Cross multiply
    135,919.40x = 203,475.90 × 101,013.80
  4. Step 4: Simplify right side
    135,919.40x = 20,553,873,867.42
  5. Step 5: Solve for x
    x = 20,553,873,867.42/135,919.40
  6. Step 6: Final answer
    x = 151,221.05

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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.