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Finding the Fourth Proportional to 117,115.25, 161,618.32 and 63,399.88

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Solution

The fourth proportional to 117,115.25, 161,618.32 and 63,399.88 is: 87,491.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,115.25 : 161,618.32 = 63,399.88 : x
  2. Step 2: Convert to fraction form
    117,115.25/161,618.32 = 63,399.88/x
  3. Step 3: Cross multiply
    117,115.25x = 161,618.32 × 63,399.88
  4. Step 4: Simplify right side
    117,115.25x = 10,246,581,531.26
  5. Step 5: Solve for x
    x = 10,246,581,531.26/117,115.25
  6. Step 6: Final answer
    x = 87,491.44

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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.