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Finding the Fourth Proportional to 117,221.14, 161,765.22 and 63,506.53

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Solution

The fourth proportional to 117,221.14, 161,765.22 and 63,506.53 is: 87,639.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,221.14 : 161,765.22 = 63,506.53 : x
  2. Step 2: Convert to fraction form
    117,221.14/161,765.22 = 63,506.53/x
  3. Step 3: Cross multiply
    117,221.14x = 161,765.22 × 63,506.53
  4. Step 4: Simplify right side
    117,221.14x = 10,273,147,796.89
  5. Step 5: Solve for x
    x = 10,273,147,796.89/117,221.14
  6. Step 6: Final answer
    x = 87,639.04

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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.