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Finding the Fourth Proportional to 135,993.86, 203,990.75 and 42,499.61

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Solution

The fourth proportional to 135,993.86, 203,990.75 and 42,499.61 is: 63,749.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,993.86 : 203,990.75 = 42,499.61 : x
  2. Step 2: Convert to fraction form
    135,993.86/203,990.75 = 42,499.61/x
  3. Step 3: Cross multiply
    135,993.86x = 203,990.75 × 42,499.61
  4. Step 4: Simplify right side
    135,993.86x = 8,669,526,086.16
  5. Step 5: Solve for x
    x = 8,669,526,086.16/135,993.86
  6. Step 6: Final answer
    x = 63,749.40

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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.