Home / 117,481.72-162,126-63,767.20

Finding the Fourth Proportional to 117,481.72, 162,126 and 63,767.20

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Solution

The fourth proportional to 117,481.72, 162,126 and 63,767.20 is: 87,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,481.72 : 162,126 = 63,767.20 : x
  2. Step 2: Convert to fraction form
    117,481.72/162,126 = 63,767.20/x
  3. Step 3: Cross multiply
    117,481.72x = 162,126 × 63,767.20
  4. Step 4: Simplify right side
    117,481.72x = 10,338,321,067.20
  5. Step 5: Solve for x
    x = 10,338,321,067.20/117,481.72
  6. Step 6: Final answer
    x = 87,999.40

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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.