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Finding the Fourth Proportional to 120,483.39, 166,265.75 and 66,036

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Solution

The fourth proportional to 120,483.39, 166,265.75 and 66,036 is: 91,128.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,483.39 : 166,265.75 = 66,036 : x
  2. Step 2: Convert to fraction form
    120,483.39/166,265.75 = 66,036/x
  3. Step 3: Cross multiply
    120,483.39x = 166,265.75 × 66,036
  4. Step 4: Simplify right side
    120,483.39x = 10,979,525,067
  5. Step 5: Solve for x
    x = 10,979,525,067/120,483.39
  6. Step 6: Final answer
    x = 91,128.95

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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.