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Finding the Fourth Proportional to 131,481.54, 181,444.54 and 71,051.96

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Solution

The fourth proportional to 131,481.54, 181,444.54 and 71,051.96 is: 98,051.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,481.54 : 181,444.54 = 71,051.96 : x
  2. Step 2: Convert to fraction form
    131,481.54/181,444.54 = 71,051.96/x
  3. Step 3: Cross multiply
    131,481.54x = 181,444.54 × 71,051.96
  4. Step 4: Simplify right side
    131,481.54x = 12,891,990,198.30
  5. Step 5: Solve for x
    x = 12,891,990,198.30/131,481.54
  6. Step 6: Final answer
    x = 98,051.71

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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.