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Finding the Fourth Proportional to 133,919.79, 200,873.93 and 40,422.75

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Solution

The fourth proportional to 133,919.79, 200,873.93 and 40,422.75 is: 60,632.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,919.79 : 200,873.93 = 40,422.75 : x
  2. Step 2: Convert to fraction form
    133,919.79/200,873.93 = 40,422.75/x
  3. Step 3: Cross multiply
    133,919.79x = 200,873.93 × 40,422.75
  4. Step 4: Simplify right side
    133,919.79x = 8,119,876,451.79
  5. Step 5: Solve for x
    x = 8,119,876,451.79/133,919.79
  6. Step 6: Final answer
    x = 60,632.39

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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.