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Finding the Fourth Proportional to 133,234.75, 183,864.44 and 72,805.40

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Solution

The fourth proportional to 133,234.75, 183,864.44 and 72,805.40 is: 100,471.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,234.75 : 183,864.44 = 72,805.40 : x
  2. Step 2: Convert to fraction form
    133,234.75/183,864.44 = 72,805.40/x
  3. Step 3: Cross multiply
    133,234.75x = 183,864.44 × 72,805.40
  4. Step 4: Simplify right side
    133,234.75x = 13,386,323,847.39
  5. Step 5: Solve for x
    x = 13,386,323,847.39/133,234.75
  6. Step 6: Final answer
    x = 100,471.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.