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Finding the Fourth Proportional to 123,155.13, 169,954.00 and 66,566.51

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Solution

The fourth proportional to 123,155.13, 169,954.00 and 66,566.51 is: 91,861.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,155.13 : 169,954.00 = 66,566.51 : x
  2. Step 2: Convert to fraction form
    123,155.13/169,954.00 = 66,566.51/x
  3. Step 3: Cross multiply
    123,155.13x = 169,954.00 × 66,566.51
  4. Step 4: Simplify right side
    123,155.13x = 11,313,244,261.68
  5. Step 5: Solve for x
    x = 11,313,244,261.68/123,155.13
  6. Step 6: Final answer
    x = 91,861.74

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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.