Home / 156,339.22-215,747.58-84,721

Finding the Fourth Proportional to 156,339.22, 215,747.58 and 84,721

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Solution

The fourth proportional to 156,339.22, 215,747.58 and 84,721 is: 116,914.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,339.22 : 215,747.58 = 84,721 : x
  2. Step 2: Convert to fraction form
    156,339.22/215,747.58 = 84,721/x
  3. Step 3: Cross multiply
    156,339.22x = 215,747.58 × 84,721
  4. Step 4: Simplify right side
    156,339.22x = 18,278,350,725.18
  5. Step 5: Solve for x
    x = 18,278,350,725.18/156,339.22
  6. Step 6: Final answer
    x = 116,914.69

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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.