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Finding the Fourth Proportional to 122,442.88, 168,958.15 and 68,733.81

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Solution

The fourth proportional to 122,442.88, 168,958.15 and 68,733.81 is: 94,845.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,442.88 : 168,958.15 = 68,733.81 : x
  2. Step 2: Convert to fraction form
    122,442.88/168,958.15 = 68,733.81/x
  3. Step 3: Cross multiply
    122,442.88x = 168,958.15 × 68,733.81
  4. Step 4: Simplify right side
    122,442.88x = 11,613,137,380.05
  5. Step 5: Solve for x
    x = 11,613,137,380.05/122,442.88
  6. Step 6: Final answer
    x = 94,845.35

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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.