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Finding the Fourth Proportional to 181,757.42, 251,035.18 and 121,222.88

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Solution

The fourth proportional to 181,757.42, 251,035.18 and 121,222.88 is: 167,427.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,757.42 : 251,035.18 = 121,222.88 : x
  2. Step 2: Convert to fraction form
    181,757.42/251,035.18 = 121,222.88/x
  3. Step 3: Cross multiply
    181,757.42x = 251,035.18 × 121,222.88
  4. Step 4: Simplify right side
    181,757.42x = 30,431,207,500.92
  5. Step 5: Solve for x
    x = 30,431,207,500.92/181,757.42
  6. Step 6: Final answer
    x = 167,427.59

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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.