Home / 120,905.45-166,853.57-67,192.73

Finding the Fourth Proportional to 120,905.45, 166,853.57 and 67,192.73

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Solution

The fourth proportional to 120,905.45, 166,853.57 and 67,192.73 is: 92,728.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,905.45 : 166,853.57 = 67,192.73 : x
  2. Step 2: Convert to fraction form
    120,905.45/166,853.57 = 67,192.73/x
  3. Step 3: Cross multiply
    120,905.45x = 166,853.57 × 67,192.73
  4. Step 4: Simplify right side
    120,905.45x = 11,211,345,708.31
  5. Step 5: Solve for x
    x = 11,211,345,708.31/120,905.45
  6. Step 6: Final answer
    x = 92,728.21

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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.