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Finding the Fourth Proportional to 149,249.79, 205,954.25 and 84,720.33

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Solution

The fourth proportional to 149,249.79, 205,954.25 and 84,720.33 is: 116,908.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,249.79 : 205,954.25 = 84,720.33 : x
  2. Step 2: Convert to fraction form
    149,249.79/205,954.25 = 84,720.33/x
  3. Step 3: Cross multiply
    149,249.79x = 205,954.25 × 84,720.33
  4. Step 4: Simplify right side
    149,249.79x = 17,448,511,601.30
  5. Step 5: Solve for x
    x = 17,448,511,601.30/149,249.79
  6. Step 6: Final answer
    x = 116,908.11

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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.