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Finding the Fourth Proportional to 123,036, 169,789.71 and 66,447.39

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Solution

The fourth proportional to 123,036, 169,789.71 and 66,447.39 is: 91,697.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,036 : 169,789.71 = 66,447.39 : x
  2. Step 2: Convert to fraction form
    123,036/169,789.71 = 66,447.39/x
  3. Step 3: Cross multiply
    123,036x = 169,789.71 × 66,447.39
  4. Step 4: Simplify right side
    123,036x = 11,282,083,078.36
  5. Step 5: Solve for x
    x = 11,282,083,078.36/123,036
  6. Step 6: Final answer
    x = 91,697.41

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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.