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Finding the Fourth Proportional to 122,388.62, 168,898.91 and 68,677.52

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Solution

The fourth proportional to 122,388.62, 168,898.91 and 68,677.52 is: 94,776.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,388.62 : 168,898.91 = 68,677.52 : x
  2. Step 2: Convert to fraction form
    122,388.62/168,898.91 = 68,677.52/x
  3. Step 3: Cross multiply
    122,388.62x = 168,898.91 × 68,677.52
  4. Step 4: Simplify right side
    122,388.62x = 11,599,557,081.62
  5. Step 5: Solve for x
    x = 11,599,557,081.62/122,388.62
  6. Step 6: Final answer
    x = 94,776.44

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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.