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Finding the Fourth Proportional to 117,168, 161,704.56 and 76,914.24

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Solution

The fourth proportional to 117,168, 161,704.56 and 76,914.24 is: 106,150.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,168 : 161,704.56 = 76,914.24 : x
  2. Step 2: Convert to fraction form
    117,168/161,704.56 = 76,914.24/x
  3. Step 3: Cross multiply
    117,168x = 161,704.56 × 76,914.24
  4. Step 4: Simplify right side
    117,168x = 12,437,383,336.93
  5. Step 5: Solve for x
    x = 12,437,383,336.93/117,168
  6. Step 6: Final answer
    x = 106,150.00

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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.