Home / 120,020.86-165,620.46-66,305.44

Finding the Fourth Proportional to 120,020.86, 165,620.46 and 66,305.44

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Solution

The fourth proportional to 120,020.86, 165,620.46 and 66,305.44 is: 91,496.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,020.86 : 165,620.46 = 66,305.44 : x
  2. Step 2: Convert to fraction form
    120,020.86/165,620.46 = 66,305.44/x
  3. Step 3: Cross multiply
    120,020.86x = 165,620.46 × 66,305.44
  4. Step 4: Simplify right side
    120,020.86x = 10,981,537,473.30
  5. Step 5: Solve for x
    x = 10,981,537,473.30/120,020.86
  6. Step 6: Final answer
    x = 91,496.91

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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.