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Finding the Fourth Proportional to 123,091.26, 169,866.06 and 66,502.76

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Solution

The fourth proportional to 123,091.26, 169,866.06 and 66,502.76 is: 91,773.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,091.26 : 169,866.06 = 66,502.76 : x
  2. Step 2: Convert to fraction form
    123,091.26/169,866.06 = 66,502.76/x
  3. Step 3: Cross multiply
    123,091.26x = 169,866.06 × 66,502.76
  4. Step 4: Simplify right side
    123,091.26x = 11,296,561,820.33
  5. Step 5: Solve for x
    x = 11,296,561,820.33/123,091.26
  6. Step 6: Final answer
    x = 91,773.87

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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.