Home / 156,310.98-215,708.83-84,691.28

Finding the Fourth Proportional to 156,310.98, 215,708.83 and 84,691.28

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Solution

The fourth proportional to 156,310.98, 215,708.83 and 84,691.28 is: 116,873.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,310.98 : 215,708.83 = 84,691.28 : x
  2. Step 2: Convert to fraction form
    156,310.98/215,708.83 = 84,691.28/x
  3. Step 3: Cross multiply
    156,310.98x = 215,708.83 × 84,691.28
  4. Step 4: Simplify right side
    156,310.98x = 18,268,656,920.00
  5. Step 5: Solve for x
    x = 18,268,656,920.00/156,310.98
  6. Step 6: Final answer
    x = 116,873.79

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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.