Home / 143,129.43-214,609.10-54,389.48

Finding the Fourth Proportional to 143,129.43, 214,609.10 and 54,389.48

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Solution

The fourth proportional to 143,129.43, 214,609.10 and 54,389.48 is: 81,551.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,129.43 : 214,609.10 = 54,389.48 : x
  2. Step 2: Convert to fraction form
    143,129.43/214,609.10 = 54,389.48/x
  3. Step 3: Cross multiply
    143,129.43x = 214,609.10 × 54,389.48
  4. Step 4: Simplify right side
    143,129.43x = 11,672,476,007.28
  5. Step 5: Solve for x
    x = 11,672,476,007.28/143,129.43
  6. Step 6: Final answer
    x = 81,551.89

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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.