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Finding the Fourth Proportional to 120,857.94, 166,865.67 and 73,194.30

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Solution

The fourth proportional to 120,857.94, 166,865.67 and 73,194.30 is: 101,057.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,857.94 : 166,865.67 = 73,194.30 : x
  2. Step 2: Convert to fraction form
    120,857.94/166,865.67 = 73,194.30/x
  3. Step 3: Cross multiply
    120,857.94x = 166,865.67 × 73,194.30
  4. Step 4: Simplify right side
    120,857.94x = 12,213,615,909.68
  5. Step 5: Solve for x
    x = 12,213,615,909.68/120,857.94
  6. Step 6: Final answer
    x = 101,057.62

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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.