Home / 143,991.29-215,962.31-38,785.65

Finding the Fourth Proportional to 143,991.29, 215,962.31 and 38,785.65

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Solution

The fourth proportional to 143,991.29, 215,962.31 and 38,785.65 is: 58,171.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,991.29 : 215,962.31 = 38,785.65 : x
  2. Step 2: Convert to fraction form
    143,991.29/215,962.31 = 38,785.65/x
  3. Step 3: Cross multiply
    143,991.29x = 215,962.31 × 38,785.65
  4. Step 4: Simplify right side
    143,991.29x = 8,376,238,984.25
  5. Step 5: Solve for x
    x = 8,376,238,984.25/143,991.29
  6. Step 6: Final answer
    x = 58,171.85

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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.