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Finding the Fourth Proportional to 120,884.81, 166,817.75 and 67,168.45

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Solution

The fourth proportional to 120,884.81, 166,817.75 and 67,168.45 is: 92,690.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,884.81 : 166,817.75 = 67,168.45 : x
  2. Step 2: Convert to fraction form
    120,884.81/166,817.75 = 67,168.45/x
  3. Step 3: Cross multiply
    120,884.81x = 166,817.75 × 67,168.45
  4. Step 4: Simplify right side
    120,884.81x = 11,204,888,947.10
  5. Step 5: Solve for x
    x = 11,204,888,947.10/120,884.81
  6. Step 6: Final answer
    x = 92,690.63

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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.