Home / 149,098.60-205,757.70-81,115.96

Finding the Fourth Proportional to 149,098.60, 205,757.70 and 81,115.96

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Solution

The fourth proportional to 149,098.60, 205,757.70 and 81,115.96 is: 111,940.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,098.60 : 205,757.70 = 81,115.96 : x
  2. Step 2: Convert to fraction form
    149,098.60/205,757.70 = 81,115.96/x
  3. Step 3: Cross multiply
    149,098.60x = 205,757.70 × 81,115.96
  4. Step 4: Simplify right side
    149,098.60x = 16,690,233,362.89
  5. Step 5: Solve for x
    x = 16,690,233,362.89/149,098.60
  6. Step 6: Final answer
    x = 111,940.91

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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.