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Finding the Fourth Proportional to 120,358.92, 166,150.62 and 85,930.68

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Solution

The fourth proportional to 120,358.92, 166,150.62 and 85,930.68 is: 118,623.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,358.92 : 166,150.62 = 85,930.68 : x
  2. Step 2: Convert to fraction form
    120,358.92/166,150.62 = 85,930.68/x
  3. Step 3: Cross multiply
    120,358.92x = 166,150.62 × 85,930.68
  4. Step 4: Simplify right side
    120,358.92x = 14,277,435,759.02
  5. Step 5: Solve for x
    x = 14,277,435,759.02/120,358.92
  6. Step 6: Final answer
    x = 118,623.83

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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.