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Finding the Fourth Proportional to 123,083.28, 169,854.96 and 66,494.64

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Solution

The fourth proportional to 123,083.28, 169,854.96 and 66,494.64 is: 91,762.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,083.28 : 169,854.96 = 66,494.64 : x
  2. Step 2: Convert to fraction form
    123,083.28/169,854.96 = 66,494.64/x
  3. Step 3: Cross multiply
    123,083.28x = 169,854.96 × 66,494.64
  4. Step 4: Simplify right side
    123,083.28x = 11,294,444,417.41
  5. Step 5: Solve for x
    x = 11,294,444,417.41/123,083.28
  6. Step 6: Final answer
    x = 91,762.62

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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.