Home / 216,691.40-324,986.07-121,961.90

Finding the Fourth Proportional to 216,691.40, 324,986.07 and 121,961.90

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Solution

The fourth proportional to 216,691.40, 324,986.07 and 121,961.90 is: 182,914.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,691.40 : 324,986.07 = 121,961.90 : x
  2. Step 2: Convert to fraction form
    216,691.40/324,986.07 = 121,961.90/x
  3. Step 3: Cross multiply
    216,691.40x = 324,986.07 × 121,961.90
  4. Step 4: Simplify right side
    216,691.40x = 39,635,919,840.56
  5. Step 5: Solve for x
    x = 39,635,919,840.56/216,691.40
  6. Step 6: Final answer
    x = 182,914.13

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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.