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Finding the Fourth Proportional to 138,181.84, 207,250.76 and 49,418.80

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Solution

The fourth proportional to 138,181.84, 207,250.76 and 49,418.80 is: 74,120.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,181.84 : 207,250.76 = 49,418.80 : x
  2. Step 2: Convert to fraction form
    138,181.84/207,250.76 = 49,418.80/x
  3. Step 3: Cross multiply
    138,181.84x = 207,250.76 × 49,418.80
  4. Step 4: Simplify right side
    138,181.84x = 10,242,083,858.29
  5. Step 5: Solve for x
    x = 10,242,083,858.29/138,181.84
  6. Step 6: Final answer
    x = 74,120.33

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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.