Home / 143,135.40-214,622.10-54,391.80

Finding the Fourth Proportional to 143,135.40, 214,622.10 and 54,391.80

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Solution

The fourth proportional to 143,135.40, 214,622.10 and 54,391.80 is: 81,556.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,135.40 : 214,622.10 = 54,391.80 : x
  2. Step 2: Convert to fraction form
    143,135.40/214,622.10 = 54,391.80/x
  3. Step 3: Cross multiply
    143,135.40x = 214,622.10 × 54,391.80
  4. Step 4: Simplify right side
    143,135.40x = 11,673,682,338.78
  5. Step 5: Solve for x
    x = 11,673,682,338.78/143,135.40
  6. Step 6: Final answer
    x = 81,556.92

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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.