Home / 117,538.11-162,198.06-63,821.91

Finding the Fourth Proportional to 117,538.11, 162,198.06 and 63,821.91

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Solution

The fourth proportional to 117,538.11, 162,198.06 and 63,821.91 is: 88,071.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,538.11 : 162,198.06 = 63,821.91 : x
  2. Step 2: Convert to fraction form
    117,538.11/162,198.06 = 63,821.91/x
  3. Step 3: Cross multiply
    117,538.11x = 162,198.06 × 63,821.91
  4. Step 4: Simplify right side
    117,538.11x = 10,351,789,987.49
  5. Step 5: Solve for x
    x = 10,351,789,987.49/117,538.11
  6. Step 6: Final answer
    x = 88,071.78

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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.