Home / 143,991.72-215,962.97-38,786.09

Finding the Fourth Proportional to 143,991.72, 215,962.97 and 38,786.09

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Solution

The fourth proportional to 143,991.72, 215,962.97 and 38,786.09 is: 58,172.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,991.72 : 215,962.97 = 38,786.09 : x
  2. Step 2: Convert to fraction form
    143,991.72/215,962.97 = 38,786.09/x
  3. Step 3: Cross multiply
    143,991.72x = 215,962.97 × 38,786.09
  4. Step 4: Simplify right side
    143,991.72x = 8,376,357,917.34
  5. Step 5: Solve for x
    x = 8,376,357,917.34/143,991.72
  6. Step 6: Final answer
    x = 58,172.50

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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.