Home / 156,101.28-215,420.40-84,481.26

Finding the Fourth Proportional to 156,101.28, 215,420.40 and 84,481.26

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Solution

The fourth proportional to 156,101.28, 215,420.40 and 84,481.26 is: 116,584.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,101.28 : 215,420.40 = 84,481.26 : x
  2. Step 2: Convert to fraction form
    156,101.28/215,420.40 = 84,481.26/x
  3. Step 3: Cross multiply
    156,101.28x = 215,420.40 × 84,481.26
  4. Step 4: Simplify right side
    156,101.28x = 18,198,986,821.70
  5. Step 5: Solve for x
    x = 18,198,986,821.70/156,101.28
  6. Step 6: Final answer
    x = 116,584.48

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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.