Home / 143,563.64-197,912.52-100,990.04

Finding the Fourth Proportional to 143,563.64, 197,912.52 and 100,990.04

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Solution

The fourth proportional to 143,563.64, 197,912.52 and 100,990.04 is: 139,221.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,563.64 : 197,912.52 = 100,990.04 : x
  2. Step 2: Convert to fraction form
    143,563.64/197,912.52 = 100,990.04/x
  3. Step 3: Cross multiply
    143,563.64x = 197,912.52 × 100,990.04
  4. Step 4: Simplify right side
    143,563.64x = 19,987,193,311.30
  5. Step 5: Solve for x
    x = 19,987,193,311.30/143,563.64
  6. Step 6: Final answer
    x = 139,221.83

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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.