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Finding the Fourth Proportional to 120,561.93, 166,384.87 and 66,857.41

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Solution

The fourth proportional to 120,561.93, 166,384.87 and 66,857.41 is: 92,268.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,561.93 : 166,384.87 = 66,857.41 : x
  2. Step 2: Convert to fraction form
    120,561.93/166,384.87 = 66,857.41/x
  3. Step 3: Cross multiply
    120,561.93x = 166,384.87 × 66,857.41
  4. Step 4: Simplify right side
    120,561.93x = 11,124,061,512.22
  5. Step 5: Solve for x
    x = 11,124,061,512.22/120,561.93
  6. Step 6: Final answer
    x = 92,268.44

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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.