Home / 143,540.87-198,073.50-83,115.60

Finding the Fourth Proportional to 143,540.87, 198,073.50 and 83,115.60

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Solution

The fourth proportional to 143,540.87, 198,073.50 and 83,115.60 is: 114,692.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,540.87 : 198,073.50 = 83,115.60 : x
  2. Step 2: Convert to fraction form
    143,540.87/198,073.50 = 83,115.60/x
  3. Step 3: Cross multiply
    143,540.87x = 198,073.50 × 83,115.60
  4. Step 4: Simplify right side
    143,540.87x = 16,462,997,796.60
  5. Step 5: Solve for x
    x = 16,462,997,796.60/143,540.87
  6. Step 6: Final answer
    x = 114,692.06

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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.