Home / 172,956.20-259,434.30-143,431.70

Finding the Fourth Proportional to 172,956.20, 259,434.30 and 143,431.70

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Solution

The fourth proportional to 172,956.20, 259,434.30 and 143,431.70 is: 215,147.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,956.20 : 259,434.30 = 143,431.70 : x
  2. Step 2: Convert to fraction form
    172,956.20/259,434.30 = 143,431.70/x
  3. Step 3: Cross multiply
    172,956.20x = 259,434.30 × 143,431.70
  4. Step 4: Simplify right side
    172,956.20x = 37,211,102,687.31
  5. Step 5: Solve for x
    x = 37,211,102,687.31/172,956.20
  6. Step 6: Final answer
    x = 215,147.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.