Home / 143,973.64-198,692.76-80,311.30

Finding the Fourth Proportional to 143,973.64, 198,692.76 and 80,311.30

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Solution

The fourth proportional to 143,973.64, 198,692.76 and 80,311.30 is: 110,834.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,973.64 : 198,692.76 = 80,311.30 : x
  2. Step 2: Convert to fraction form
    143,973.64/198,692.76 = 80,311.30/x
  3. Step 3: Cross multiply
    143,973.64x = 198,692.76 × 80,311.30
  4. Step 4: Simplify right side
    143,973.64x = 15,957,273,856.19
  5. Step 5: Solve for x
    x = 15,957,273,856.19/143,973.64
  6. Step 6: Final answer
    x = 110,834.69

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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.