Home / 143,381.40-214,999.20-84,235.20

Finding the Fourth Proportional to 143,381.40, 214,999.20 and 84,235.20

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Solution

The fourth proportional to 143,381.40, 214,999.20 and 84,235.20 is: 126,309.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,381.40 : 214,999.20 = 84,235.20 : x
  2. Step 2: Convert to fraction form
    143,381.40/214,999.20 = 84,235.20/x
  3. Step 3: Cross multiply
    143,381.40x = 214,999.20 × 84,235.20
  4. Step 4: Simplify right side
    143,381.40x = 18,110,500,611.84
  5. Step 5: Solve for x
    x = 18,110,500,611.84/143,381.40
  6. Step 6: Final answer
    x = 126,309.97

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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.