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Finding the Fourth Proportional to 117,660.45, 162,372.42 and 63,945.45

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Solution

The fourth proportional to 117,660.45, 162,372.42 and 63,945.45 is: 88,245.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,660.45 : 162,372.42 = 63,945.45 : x
  2. Step 2: Convert to fraction form
    117,660.45/162,372.42 = 63,945.45/x
  3. Step 3: Cross multiply
    117,660.45x = 162,372.42 × 63,945.45
  4. Step 4: Simplify right side
    117,660.45x = 10,382,977,464.49
  5. Step 5: Solve for x
    x = 10,382,977,464.49/117,660.45
  6. Step 6: Final answer
    x = 88,245.26

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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.