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Finding the Fourth Proportional to 169,438.59, 253,992.63 and 80,668.26

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Solution

The fourth proportional to 169,438.59, 253,992.63 and 80,668.26 is: 120,923.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,438.59 : 253,992.63 = 80,668.26 : x
  2. Step 2: Convert to fraction form
    169,438.59/253,992.63 = 80,668.26/x
  3. Step 3: Cross multiply
    169,438.59x = 253,992.63 × 80,668.26
  4. Step 4: Simplify right side
    169,438.59x = 20,489,143,514.92
  5. Step 5: Solve for x
    x = 20,489,143,514.92/169,438.59
  6. Step 6: Final answer
    x = 120,923.71

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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.