Home / 143,138.20-214,707.30-80,152.60

Finding the Fourth Proportional to 143,138.20, 214,707.30 and 80,152.60

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Solution

The fourth proportional to 143,138.20, 214,707.30 and 80,152.60 is: 120,228.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,138.20 : 214,707.30 = 80,152.60 : x
  2. Step 2: Convert to fraction form
    143,138.20/214,707.30 = 80,152.60/x
  3. Step 3: Cross multiply
    143,138.20x = 214,707.30 × 80,152.60
  4. Step 4: Simplify right side
    143,138.20x = 17,209,348,333.98
  5. Step 5: Solve for x
    x = 17,209,348,333.98/143,138.20
  6. Step 6: Final answer
    x = 120,228.90

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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.