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Finding the Fourth Proportional to 120,363.81, 166,100.90 and 69,357.80

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Solution

The fourth proportional to 120,363.81, 166,100.90 and 69,357.80 is: 95,713.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,363.81 : 166,100.90 = 69,357.80 : x
  2. Step 2: Convert to fraction form
    120,363.81/166,100.90 = 69,357.80/x
  3. Step 3: Cross multiply
    120,363.81x = 166,100.90 × 69,357.80
  4. Step 4: Simplify right side
    120,363.81x = 11,520,391,824.73
  5. Step 5: Solve for x
    x = 11,520,391,824.73/120,363.81
  6. Step 6: Final answer
    x = 95,713.09

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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.