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Finding the Fourth Proportional to 121,286.62, 181,728.80 and 73,757.94

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Solution

The fourth proportional to 121,286.62, 181,728.80 and 73,757.94 is: 110,514.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,286.62 : 181,728.80 = 73,757.94 : x
  2. Step 2: Convert to fraction form
    121,286.62/181,728.80 = 73,757.94/x
  3. Step 3: Cross multiply
    121,286.62x = 181,728.80 × 73,757.94
  4. Step 4: Simplify right side
    121,286.62x = 13,403,941,926.67
  5. Step 5: Solve for x
    x = 13,403,941,926.67/121,286.62
  6. Step 6: Final answer
    x = 110,514.60

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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.