Home / 120,604.09-166,443.60-66,906.40

Finding the Fourth Proportional to 120,604.09, 166,443.60 and 66,906.40

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Solution

The fourth proportional to 120,604.09, 166,443.60 and 66,906.40 is: 92,336.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,604.09 : 166,443.60 = 66,906.40 : x
  2. Step 2: Convert to fraction form
    120,604.09/166,443.60 = 66,906.40/x
  3. Step 3: Cross multiply
    120,604.09x = 166,443.60 × 66,906.40
  4. Step 4: Simplify right side
    120,604.09x = 11,136,142,079.04
  5. Step 5: Solve for x
    x = 11,136,142,079.04/120,604.09
  6. Step 6: Final answer
    x = 92,336.36

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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.