Home / 143,800.22-198,450.06-80,137.46

Finding the Fourth Proportional to 143,800.22, 198,450.06 and 80,137.46

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Solution

The fourth proportional to 143,800.22, 198,450.06 and 80,137.46 is: 110,592.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,800.22 : 198,450.06 = 80,137.46 : x
  2. Step 2: Convert to fraction form
    143,800.22/198,450.06 = 80,137.46/x
  3. Step 3: Cross multiply
    143,800.22x = 198,450.06 × 80,137.46
  4. Step 4: Simplify right side
    143,800.22x = 15,903,283,745.25
  5. Step 5: Solve for x
    x = 15,903,283,745.25/143,800.22
  6. Step 6: Final answer
    x = 110,592.90

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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.