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Finding the Fourth Proportional to 120,919.13, 166,855.14 and 69,924.16

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Solution

The fourth proportional to 120,919.13, 166,855.14 and 69,924.16 is: 96,487.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,919.13 : 166,855.14 = 69,924.16 : x
  2. Step 2: Convert to fraction form
    120,919.13/166,855.14 = 69,924.16/x
  3. Step 3: Cross multiply
    120,919.13x = 166,855.14 × 69,924.16
  4. Step 4: Simplify right side
    120,919.13x = 11,667,205,714.75
  5. Step 5: Solve for x
    x = 11,667,205,714.75/120,919.13
  6. Step 6: Final answer
    x = 96,487.68

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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.