Home / 156,481.57-215,975.19-102,765.21

Finding the Fourth Proportional to 156,481.57, 215,975.19 and 102,765.21

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Solution

The fourth proportional to 156,481.57, 215,975.19 and 102,765.21 is: 141,836.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,481.57 : 215,975.19 = 102,765.21 : x
  2. Step 2: Convert to fraction form
    156,481.57/215,975.19 = 102,765.21/x
  3. Step 3: Cross multiply
    156,481.57x = 215,975.19 × 102,765.21
  4. Step 4: Simplify right side
    156,481.57x = 22,194,735,755.14
  5. Step 5: Solve for x
    x = 22,194,735,755.14/156,481.57
  6. Step 6: Final answer
    x = 141,836.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.