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Finding the Fourth Proportional to 120,597.67, 166,435 and 66,899.98

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Solution

The fourth proportional to 120,597.67, 166,435 and 66,899.98 is: 92,327.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,597.67 : 166,435 = 66,899.98 : x
  2. Step 2: Convert to fraction form
    120,597.67/166,435 = 66,899.98/x
  3. Step 3: Cross multiply
    120,597.67x = 166,435 × 66,899.98
  4. Step 4: Simplify right side
    120,597.67x = 11,134,498,171.30
  5. Step 5: Solve for x
    x = 11,134,498,171.30/120,597.67
  6. Step 6: Final answer
    x = 92,327.64

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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.