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Finding the Fourth Proportional to 181,855.69, 272,783.42 and 85,770.56

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Solution

The fourth proportional to 181,855.69, 272,783.42 and 85,770.56 is: 128,655.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,855.69 : 272,783.42 = 85,770.56 : x
  2. Step 2: Convert to fraction form
    181,855.69/272,783.42 = 85,770.56/x
  3. Step 3: Cross multiply
    181,855.69x = 272,783.42 × 85,770.56
  4. Step 4: Simplify right side
    181,855.69x = 23,396,785,542.62
  5. Step 5: Solve for x
    x = 23,396,785,542.62/181,855.69
  6. Step 6: Final answer
    x = 128,655.78

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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.