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Finding the Fourth Proportional to 103,181.99, 154,786.75 and 40,837.91

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Solution

The fourth proportional to 103,181.99, 154,786.75 and 40,837.91 is: 61,262.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,181.99 : 154,786.75 = 40,837.91 : x
  2. Step 2: Convert to fraction form
    103,181.99/154,786.75 = 40,837.91/x
  3. Step 3: Cross multiply
    103,181.99x = 154,786.75 × 40,837.91
  4. Step 4: Simplify right side
    103,181.99x = 6,321,166,489.66
  5. Step 5: Solve for x
    x = 6,321,166,489.66/103,181.99
  6. Step 6: Final answer
    x = 61,262.31

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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.