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Finding the Fourth Proportional to 122,099.16, 168,498.51 and 68,383.80

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Solution

The fourth proportional to 122,099.16, 168,498.51 and 68,383.80 is: 94,370.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,099.16 : 168,498.51 = 68,383.80 : x
  2. Step 2: Convert to fraction form
    122,099.16/168,498.51 = 68,383.80/x
  3. Step 3: Cross multiply
    122,099.16x = 168,498.51 × 68,383.80
  4. Step 4: Simplify right side
    122,099.16x = 11,522,568,408.14
  5. Step 5: Solve for x
    x = 11,522,568,408.14/122,099.16
  6. Step 6: Final answer
    x = 94,370.58

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1.5x scale

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.