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Finding the Fourth Proportional to 123,059.81, 169,822.61 and 66,471.19

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Solution

The fourth proportional to 123,059.81, 169,822.61 and 66,471.19 is: 91,730.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,059.81 : 169,822.61 = 66,471.19 : x
  2. Step 2: Convert to fraction form
    123,059.81/169,822.61 = 66,471.19/x
  3. Step 3: Cross multiply
    123,059.81x = 169,822.61 × 66,471.19
  4. Step 4: Simplify right side
    123,059.81x = 11,288,310,717.23
  5. Step 5: Solve for x
    x = 11,288,310,717.23/123,059.81
  6. Step 6: Final answer
    x = 91,730.28

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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.