Home / 140,772.06-194,200.47-81,121.50

Finding the Fourth Proportional to 140,772.06, 194,200.47 and 81,121.50

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Solution

The fourth proportional to 140,772.06, 194,200.47 and 81,121.50 is: 111,910.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,772.06 : 194,200.47 = 81,121.50 : x
  2. Step 2: Convert to fraction form
    140,772.06/194,200.47 = 81,121.50/x
  3. Step 3: Cross multiply
    140,772.06x = 194,200.47 × 81,121.50
  4. Step 4: Simplify right side
    140,772.06x = 15,753,833,427.11
  5. Step 5: Solve for x
    x = 15,753,833,427.11/140,772.06
  6. Step 6: Final answer
    x = 111,910.23

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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.