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Finding the Fourth Proportional to 117,754.53, 162,497.78 and 66,771.92

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Solution

The fourth proportional to 117,754.53, 162,497.78 and 66,771.92 is: 92,143.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,754.53 : 162,497.78 = 66,771.92 : x
  2. Step 2: Convert to fraction form
    117,754.53/162,497.78 = 66,771.92/x
  3. Step 3: Cross multiply
    117,754.53x = 162,497.78 × 66,771.92
  4. Step 4: Simplify right side
    117,754.53x = 10,850,287,619.99
  5. Step 5: Solve for x
    x = 10,850,287,619.99/117,754.53
  6. Step 6: Final answer
    x = 92,143.27

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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.