Home / 143,860.40-215,821.73-55,113.90

Finding the Fourth Proportional to 143,860.40, 215,821.73 and 55,113.90

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Solution

The fourth proportional to 143,860.40, 215,821.73 and 55,113.90 is: 82,682.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,860.40 : 215,821.73 = 55,113.90 : x
  2. Step 2: Convert to fraction form
    143,860.40/215,821.73 = 55,113.90/x
  3. Step 3: Cross multiply
    143,860.40x = 215,821.73 × 55,113.90
  4. Step 4: Simplify right side
    143,860.40x = 11,894,777,245.05
  5. Step 5: Solve for x
    x = 11,894,777,245.05/143,860.40
  6. Step 6: Final answer
    x = 82,682.78

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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.