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Finding the Fourth Proportional to 122,170.59, 168,579.75 and 68,442.39

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Solution

The fourth proportional to 122,170.59, 168,579.75 and 68,442.39 is: 94,441.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,170.59 : 168,579.75 = 68,442.39 : x
  2. Step 2: Convert to fraction form
    122,170.59/168,579.75 = 68,442.39/x
  3. Step 3: Cross multiply
    122,170.59x = 168,579.75 × 68,442.39
  4. Step 4: Simplify right side
    122,170.59x = 11,538,000,995.60
  5. Step 5: Solve for x
    x = 11,538,000,995.60/122,170.59
  6. Step 6: Final answer
    x = 94,441.72

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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.