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Finding the Fourth Proportional to 120,357.67, 166,080.16 and 66,629.23

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Solution

The fourth proportional to 120,357.67, 166,080.16 and 66,629.23 is: 91,940.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,357.67 : 166,080.16 = 66,629.23 : x
  2. Step 2: Convert to fraction form
    120,357.67/166,080.16 = 66,629.23/x
  3. Step 3: Cross multiply
    120,357.67x = 166,080.16 × 66,629.23
  4. Step 4: Simplify right side
    120,357.67x = 11,065,793,179.08
  5. Step 5: Solve for x
    x = 11,065,793,179.08/120,357.67
  6. Step 6: Final answer
    x = 91,940.91

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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.