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Finding the Fourth Proportional to 135,992.88, 203,989.32 and 42,499.44

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Solution

The fourth proportional to 135,992.88, 203,989.32 and 42,499.44 is: 63,749.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,992.88 : 203,989.32 = 42,499.44 : x
  2. Step 2: Convert to fraction form
    135,992.88/203,989.32 = 42,499.44/x
  3. Step 3: Cross multiply
    135,992.88x = 203,989.32 × 42,499.44
  4. Step 4: Simplify right side
    135,992.88x = 8,669,431,865.98
  5. Step 5: Solve for x
    x = 8,669,431,865.98/135,992.88
  6. Step 6: Final answer
    x = 63,749.16

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Similar ratio
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1.5x scale

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.