Home / 216,531.91-324,770.11-90,148.60

Finding the Fourth Proportional to 216,531.91, 324,770.11 and 90,148.60

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Solution

The fourth proportional to 216,531.91, 324,770.11 and 90,148.60 is: 135,211.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,531.91 : 324,770.11 = 90,148.60 : x
  2. Step 2: Convert to fraction form
    216,531.91/324,770.11 = 90,148.60/x
  3. Step 3: Cross multiply
    216,531.91x = 324,770.11 × 90,148.60
  4. Step 4: Simplify right side
    216,531.91x = 29,277,569,092.11
  5. Step 5: Solve for x
    x = 29,277,569,092.11/216,531.91
  6. Step 6: Final answer
    x = 135,211.34

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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.