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Finding the Fourth Proportional to 120,727.77, 166,604.20 and 67,012.68

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Solution

The fourth proportional to 120,727.77, 166,604.20 and 67,012.68 is: 92,477.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,727.77 : 166,604.20 = 67,012.68 : x
  2. Step 2: Convert to fraction form
    120,727.77/166,604.20 = 67,012.68/x
  3. Step 3: Cross multiply
    120,727.77x = 166,604.20 × 67,012.68
  4. Step 4: Simplify right side
    120,727.77x = 11,164,593,941.26
  5. Step 5: Solve for x
    x = 11,164,593,941.26/120,727.77
  6. Step 6: Final answer
    x = 92,477.43

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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.