Home / 143,608.20-215,412.30-80,622.60

Finding the Fourth Proportional to 143,608.20, 215,412.30 and 80,622.60

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Solution

The fourth proportional to 143,608.20, 215,412.30 and 80,622.60 is: 120,933.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,608.20 : 215,412.30 = 80,622.60 : x
  2. Step 2: Convert to fraction form
    143,608.20/215,412.30 = 80,622.60/x
  3. Step 3: Cross multiply
    143,608.20x = 215,412.30 × 80,622.60
  4. Step 4: Simplify right side
    143,608.20x = 17,367,099,697.98
  5. Step 5: Solve for x
    x = 17,367,099,697.98/143,608.20
  6. Step 6: Final answer
    x = 120,933.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.