Home / 166,161.38-229,302.70-90,709.88

Finding the Fourth Proportional to 166,161.38, 229,302.70 and 90,709.88

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Solution

The fourth proportional to 166,161.38, 229,302.70 and 90,709.88 is: 125,179.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,161.38 : 229,302.70 = 90,709.88 : x
  2. Step 2: Convert to fraction form
    166,161.38/229,302.70 = 90,709.88/x
  3. Step 3: Cross multiply
    166,161.38x = 229,302.70 × 90,709.88
  4. Step 4: Simplify right side
    166,161.38x = 20,800,019,027.39
  5. Step 5: Solve for x
    x = 20,800,019,027.39/166,161.38
  6. Step 6: Final answer
    x = 125,179.63

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1.5x scale

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.