Home / 121,107.75-181,690.80-38,001.75

Finding the Fourth Proportional to 121,107.75, 181,690.80 and 38,001.75

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Solution

The fourth proportional to 121,107.75, 181,690.80 and 38,001.75 is: 57,011.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,107.75 : 181,690.80 = 38,001.75 : x
  2. Step 2: Convert to fraction form
    121,107.75/181,690.80 = 38,001.75/x
  3. Step 3: Cross multiply
    121,107.75x = 181,690.80 × 38,001.75
  4. Step 4: Simplify right side
    121,107.75x = 6,904,568,358.90
  5. Step 5: Solve for x
    x = 6,904,568,358.90/121,107.75
  6. Step 6: Final answer
    x = 57,011.78

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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.