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Finding the Fourth Proportional to 120,601.80, 166,431.42 and 66,883.80

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Solution

The fourth proportional to 120,601.80, 166,431.42 and 66,883.80 is: 92,300.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,601.80 : 166,431.42 = 66,883.80 : x
  2. Step 2: Convert to fraction form
    120,601.80/166,431.42 = 66,883.80/x
  3. Step 3: Cross multiply
    120,601.80x = 166,431.42 × 66,883.80
  4. Step 4: Simplify right side
    120,601.80x = 11,131,565,809.00
  5. Step 5: Solve for x
    x = 11,131,565,809.00/120,601.80
  6. Step 6: Final answer
    x = 92,300.16

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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.