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Finding the Fourth Proportional to 117,863.88, 161,591.58 and 115,731.60

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Solution

The fourth proportional to 117,863.88, 161,591.58 and 115,731.60 is: 158,668.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,863.88 : 161,591.58 = 115,731.60 : x
  2. Step 2: Convert to fraction form
    117,863.88/161,591.58 = 115,731.60/x
  3. Step 3: Cross multiply
    117,863.88x = 161,591.58 × 115,731.60
  4. Step 4: Simplify right side
    117,863.88x = 18,701,252,099.93
  5. Step 5: Solve for x
    x = 18,701,252,099.93/117,863.88
  6. Step 6: Final answer
    x = 158,668.22

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.