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Finding the Fourth Proportional to 149,144.97, 205,820.09 and 82,076.97

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Solution

The fourth proportional to 149,144.97, 205,820.09 and 82,076.97 is: 113,266.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,144.97 : 205,820.09 = 82,076.97 : x
  2. Step 2: Convert to fraction form
    149,144.97/205,820.09 = 82,076.97/x
  3. Step 3: Cross multiply
    149,144.97x = 205,820.09 × 82,076.97
  4. Step 4: Simplify right side
    149,144.97x = 16,893,089,352.33
  5. Step 5: Solve for x
    x = 16,893,089,352.33/149,144.97
  6. Step 6: Final answer
    x = 113,266.24

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1.5x scale

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.