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Finding the Fourth Proportional to 120,991.90, 166,968.24 and 67,273.72

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Solution

The fourth proportional to 120,991.90, 166,968.24 and 67,273.72 is: 92,837.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,991.90 : 166,968.24 = 67,273.72 : x
  2. Step 2: Convert to fraction form
    120,991.90/166,968.24 = 67,273.72/x
  3. Step 3: Cross multiply
    120,991.90x = 166,968.24 × 67,273.72
  4. Step 4: Simplify right side
    120,991.90x = 11,232,574,626.65
  5. Step 5: Solve for x
    x = 11,232,574,626.65/120,991.90
  6. Step 6: Final answer
    x = 92,837.41

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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.