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Finding the Fourth Proportional to 120,357.66, 166,080.16 and 66,629.22

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Solution

The fourth proportional to 120,357.66, 166,080.16 and 66,629.22 is: 91,940.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,357.66 : 166,080.16 = 66,629.22 : x
  2. Step 2: Convert to fraction form
    120,357.66/166,080.16 = 66,629.22/x
  3. Step 3: Cross multiply
    120,357.66x = 166,080.16 × 66,629.22
  4. Step 4: Simplify right side
    120,357.66x = 11,065,791,518.28
  5. Step 5: Solve for x
    x = 11,065,791,518.28/120,357.66
  6. Step 6: Final answer
    x = 91,940.90

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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.