Home / 131,431.97-181,371.78-83,059.75

Finding the Fourth Proportional to 131,431.97, 181,371.78 and 83,059.75

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Solution

The fourth proportional to 131,431.97, 181,371.78 and 83,059.75 is: 114,619.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,431.97 : 181,371.78 = 83,059.75 : x
  2. Step 2: Convert to fraction form
    131,431.97/181,371.78 = 83,059.75/x
  3. Step 3: Cross multiply
    131,431.97x = 181,371.78 × 83,059.75
  4. Step 4: Simplify right side
    131,431.97x = 15,064,694,703.86
  5. Step 5: Solve for x
    x = 15,064,694,703.86/131,431.97
  6. Step 6: Final answer
    x = 114,619.71

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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.