Home / 107,645.27-161,320.28-68,131.85

Finding the Fourth Proportional to 107,645.27, 161,320.28 and 68,131.85

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Solution

The fourth proportional to 107,645.27, 161,320.28 and 68,131.85 is: 102,104.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,645.27 : 161,320.28 = 68,131.85 : x
  2. Step 2: Convert to fraction form
    107,645.27/161,320.28 = 68,131.85/x
  3. Step 3: Cross multiply
    107,645.27x = 161,320.28 × 68,131.85
  4. Step 4: Simplify right side
    107,645.27x = 10,991,047,971.66
  5. Step 5: Solve for x
    x = 10,991,047,971.66/107,645.27
  6. Step 6: Final answer
    x = 102,104.33

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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.