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Finding the Fourth Proportional to 181,912.77, 272,912.85 and 69,591.15

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Solution

The fourth proportional to 181,912.77, 272,912.85 and 69,591.15 is: 104,403.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,912.77 : 272,912.85 = 69,591.15 : x
  2. Step 2: Convert to fraction form
    181,912.77/272,912.85 = 69,591.15/x
  3. Step 3: Cross multiply
    181,912.77x = 272,912.85 × 69,591.15
  4. Step 4: Simplify right side
    181,912.77x = 18,992,319,081.28
  5. Step 5: Solve for x
    x = 18,992,319,081.28/181,912.77
  6. Step 6: Final answer
    x = 104,403.44

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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.