Home / 107,621.43-161,431.88-51,290.79

Finding the Fourth Proportional to 107,621.43, 161,431.88 and 51,290.79

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Solution

The fourth proportional to 107,621.43, 161,431.88 and 51,290.79 is: 76,936.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,621.43 : 161,431.88 = 51,290.79 : x
  2. Step 2: Convert to fraction form
    107,621.43/161,431.88 = 51,290.79/x
  3. Step 3: Cross multiply
    107,621.43x = 161,431.88 × 51,290.79
  4. Step 4: Simplify right side
    107,621.43x = 8,279,968,399.93
  5. Step 5: Solve for x
    x = 8,279,968,399.93/107,621.43
  6. Step 6: Final answer
    x = 76,936.06

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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.