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Finding the Fourth Proportional to 120,597.87, 166,420.84 and 66,887.88

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Solution

The fourth proportional to 120,597.87, 166,420.84 and 66,887.88 is: 92,302.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,597.87 : 166,420.84 = 66,887.88 : x
  2. Step 2: Convert to fraction form
    120,597.87/166,420.84 = 66,887.88/x
  3. Step 3: Cross multiply
    120,597.87x = 166,420.84 × 66,887.88
  4. Step 4: Simplify right side
    120,597.87x = 11,131,537,175.42
  5. Step 5: Solve for x
    x = 11,131,537,175.42/120,597.87
  6. Step 6: Final answer
    x = 92,302.93

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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.