Home / 156,425.32-215,067.62-139,266.28

Finding the Fourth Proportional to 156,425.32, 215,067.62 and 139,266.28

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Solution

The fourth proportional to 156,425.32, 215,067.62 and 139,266.28 is: 191,475.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,425.32 : 215,067.62 = 139,266.28 : x
  2. Step 2: Convert to fraction form
    156,425.32/215,067.62 = 139,266.28/x
  3. Step 3: Cross multiply
    156,425.32x = 215,067.62 × 139,266.28
  4. Step 4: Simplify right side
    156,425.32x = 29,951,667,385.85
  5. Step 5: Solve for x
    x = 29,951,667,385.85/156,425.32
  6. Step 6: Final answer
    x = 191,475.83

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.