Home / 123,908.13-185,846.20-39,661.25

Finding the Fourth Proportional to 123,908.13, 185,846.20 and 39,661.25

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Solution

The fourth proportional to 123,908.13, 185,846.20 and 39,661.25 is: 59,486.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,908.13 : 185,846.20 = 39,661.25 : x
  2. Step 2: Convert to fraction form
    123,908.13/185,846.20 = 39,661.25/x
  3. Step 3: Cross multiply
    123,908.13x = 185,846.20 × 39,661.25
  4. Step 4: Simplify right side
    123,908.13x = 7,370,891,571.37
  5. Step 5: Solve for x
    x = 7,370,891,571.37/123,908.13
  6. Step 6: Final answer
    x = 59,486.75

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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.