Home / 143,380.40-214,997.70-84,234.20

Finding the Fourth Proportional to 143,380.40, 214,997.70 and 84,234.20

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Solution

The fourth proportional to 143,380.40, 214,997.70 and 84,234.20 is: 126,308.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,380.40 : 214,997.70 = 84,234.20 : x
  2. Step 2: Convert to fraction form
    143,380.40/214,997.70 = 84,234.20/x
  3. Step 3: Cross multiply
    143,380.40x = 214,997.70 × 84,234.20
  4. Step 4: Simplify right side
    143,380.40x = 18,110,159,261.34
  5. Step 5: Solve for x
    x = 18,110,159,261.34/143,380.40
  6. Step 6: Final answer
    x = 126,308.47

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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.