Home / 117,238.13-161,786.49-66,249.75

Finding the Fourth Proportional to 117,238.13, 161,786.49 and 66,249.75

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Solution

The fourth proportional to 117,238.13, 161,786.49 and 66,249.75 is: 91,423.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,238.13 : 161,786.49 = 66,249.75 : x
  2. Step 2: Convert to fraction form
    117,238.13/161,786.49 = 66,249.75/x
  3. Step 3: Cross multiply
    117,238.13x = 161,786.49 × 66,249.75
  4. Step 4: Simplify right side
    117,238.13x = 10,718,314,874.14
  5. Step 5: Solve for x
    x = 10,718,314,874.14/117,238.13
  6. Step 6: Final answer
    x = 91,423.46

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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.