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Finding the Fourth Proportional to 117,468.99, 162,107.13 and 66,480.78

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Solution

The fourth proportional to 117,468.99, 162,107.13 and 66,480.78 is: 91,743.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,468.99 : 162,107.13 = 66,480.78 : x
  2. Step 2: Convert to fraction form
    117,468.99/162,107.13 = 66,480.78/x
  3. Step 3: Cross multiply
    117,468.99x = 162,107.13 × 66,480.78
  4. Step 4: Simplify right side
    117,468.99x = 10,777,008,445.96
  5. Step 5: Solve for x
    x = 10,777,008,445.96/117,468.99
  6. Step 6: Final answer
    x = 91,743.43

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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.