Home / 149,113.76-205,770.83-81,131.00

Finding the Fourth Proportional to 149,113.76, 205,770.83 and 81,131.00

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Solution

The fourth proportional to 149,113.76, 205,770.83 and 81,131.00 is: 111,957.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,113.76 : 205,770.83 = 81,131.00 : x
  2. Step 2: Convert to fraction form
    149,113.76/205,770.83 = 81,131.00/x
  3. Step 3: Cross multiply
    149,113.76x = 205,770.83 × 81,131.00
  4. Step 4: Simplify right side
    149,113.76x = 16,694,394,256.14
  5. Step 5: Solve for x
    x = 16,694,394,256.14/149,113.76
  6. Step 6: Final answer
    x = 111,957.44

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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.