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Finding the Fourth Proportional to 120,322.79, 166,046.77 and 66,608.71

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Solution

The fourth proportional to 120,322.79, 166,046.77 and 66,608.71 is: 91,920.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,322.79 : 166,046.77 = 66,608.71 : x
  2. Step 2: Convert to fraction form
    120,322.79/166,046.77 = 66,608.71/x
  3. Step 3: Cross multiply
    120,322.79x = 166,046.77 × 66,608.71
  4. Step 4: Simplify right side
    120,322.79x = 11,060,160,692.62
  5. Step 5: Solve for x
    x = 11,060,160,692.62/120,322.79
  6. Step 6: Final answer
    x = 91,920.74

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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.