Home / 155,939.86-215,198.22-86,091.33

Finding the Fourth Proportional to 155,939.86, 215,198.22 and 86,091.33

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Solution

The fourth proportional to 155,939.86, 215,198.22 and 86,091.33 is: 118,806.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,939.86 : 215,198.22 = 86,091.33 : x
  2. Step 2: Convert to fraction form
    155,939.86/215,198.22 = 86,091.33/x
  3. Step 3: Cross multiply
    155,939.86x = 215,198.22 × 86,091.33
  4. Step 4: Simplify right side
    155,939.86x = 18,526,701,013.76
  5. Step 5: Solve for x
    x = 18,526,701,013.76/155,939.86
  6. Step 6: Final answer
    x = 118,806.71

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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.