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Finding the Fourth Proportional to 122,454.82, 168,987.57 and 68,739.94

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Solution

The fourth proportional to 122,454.82, 168,987.57 and 68,739.94 is: 94,861.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,454.82 : 168,987.57 = 68,739.94 : x
  2. Step 2: Convert to fraction form
    122,454.82/168,987.57 = 68,739.94/x
  3. Step 3: Cross multiply
    122,454.82x = 168,987.57 × 68,739.94
  4. Step 4: Simplify right side
    122,454.82x = 11,616,195,422.55
  5. Step 5: Solve for x
    x = 11,616,195,422.55/122,454.82
  6. Step 6: Final answer
    x = 94,861.07

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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.