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Finding the Fourth Proportional to 120,635.94, 166,497.55 and 66,938.25

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Solution

The fourth proportional to 120,635.94, 166,497.55 and 66,938.25 is: 92,385.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,635.94 : 166,497.55 = 66,938.25 : x
  2. Step 2: Convert to fraction form
    120,635.94/166,497.55 = 66,938.25/x
  3. Step 3: Cross multiply
    120,635.94x = 166,497.55 × 66,938.25
  4. Step 4: Simplify right side
    120,635.94x = 11,145,054,755.93
  5. Step 5: Solve for x
    x = 11,145,054,755.93/120,635.94
  6. Step 6: Final answer
    x = 92,385.86

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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.