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Finding the Fourth Proportional to 149,076.52, 205,719.66 and 81,093.58

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Solution

The fourth proportional to 149,076.52, 205,719.66 and 81,093.58 is: 111,905.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,076.52 : 205,719.66 = 81,093.58 : x
  2. Step 2: Convert to fraction form
    149,076.52/205,719.66 = 81,093.58/x
  3. Step 3: Cross multiply
    149,076.52x = 205,719.66 × 81,093.58
  4. Step 4: Simplify right side
    149,076.52x = 16,682,543,705.78
  5. Step 5: Solve for x
    x = 16,682,543,705.78/149,076.52
  6. Step 6: Final answer
    x = 111,905.91

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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.