Home / 123,682.44-185,419.77-86,131.65

Finding the Fourth Proportional to 123,682.44, 185,419.77 and 86,131.65

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Solution

The fourth proportional to 123,682.44, 185,419.77 and 86,131.65 is: 129,125.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,682.44 : 185,419.77 = 86,131.65 : x
  2. Step 2: Convert to fraction form
    123,682.44/185,419.77 = 86,131.65/x
  3. Step 3: Cross multiply
    123,682.44x = 185,419.77 × 86,131.65
  4. Step 4: Simplify right side
    123,682.44x = 15,970,510,732.72
  5. Step 5: Solve for x
    x = 15,970,510,732.72/123,682.44
  6. Step 6: Final answer
    x = 129,125.13

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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.