Home / 156,209.31-215,568.54-84,589.11

Finding the Fourth Proportional to 156,209.31, 215,568.54 and 84,589.11

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Solution

The fourth proportional to 156,209.31, 215,568.54 and 84,589.11 is: 116,732.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,209.31 : 215,568.54 = 84,589.11 : x
  2. Step 2: Convert to fraction form
    156,209.31/215,568.54 = 84,589.11/x
  3. Step 3: Cross multiply
    156,209.31x = 215,568.54 × 84,589.11
  4. Step 4: Simplify right side
    156,209.31x = 18,234,750,942.60
  5. Step 5: Solve for x
    x = 18,234,750,942.60/156,209.31
  6. Step 6: Final answer
    x = 116,732.81

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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.