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Finding the Fourth Proportional to 120,758.52, 166,638.60 and 67,039.32

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Solution

The fourth proportional to 120,758.52, 166,638.60 and 67,039.32 is: 92,509.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,758.52 : 166,638.60 = 67,039.32 : x
  2. Step 2: Convert to fraction form
    120,758.52/166,638.60 = 67,039.32/x
  3. Step 3: Cross multiply
    120,758.52x = 166,638.60 × 67,039.32
  4. Step 4: Simplify right side
    120,758.52x = 11,171,338,429.75
  5. Step 5: Solve for x
    x = 11,171,338,429.75/120,758.52
  6. Step 6: Final answer
    x = 92,509.73

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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.