Home / 172,964.20-259,446.30-143,439.70

Finding the Fourth Proportional to 172,964.20, 259,446.30 and 143,439.70

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Solution

The fourth proportional to 172,964.20, 259,446.30 and 143,439.70 is: 215,159.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,964.20 : 259,446.30 = 143,439.70 : x
  2. Step 2: Convert to fraction form
    172,964.20/259,446.30 = 143,439.70/x
  3. Step 3: Cross multiply
    172,964.20x = 259,446.30 × 143,439.70
  4. Step 4: Simplify right side
    172,964.20x = 37,214,899,438.11
  5. Step 5: Solve for x
    x = 37,214,899,438.11/172,964.20
  6. Step 6: Final answer
    x = 215,159.55

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1.5x scale

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.