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Finding the Fourth Proportional to 117,785.88, 162,517.03 and 68,719.85

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Solution

The fourth proportional to 117,785.88, 162,517.03 and 68,719.85 is: 94,817.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,785.88 : 162,517.03 = 68,719.85 : x
  2. Step 2: Convert to fraction form
    117,785.88/162,517.03 = 68,719.85/x
  3. Step 3: Cross multiply
    117,785.88x = 162,517.03 × 68,719.85
  4. Step 4: Simplify right side
    117,785.88x = 11,168,145,924.05
  5. Step 5: Solve for x
    x = 11,168,145,924.05/117,785.88
  6. Step 6: Final answer
    x = 94,817.36

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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.