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Finding the Fourth Proportional to 123,084.63, 169,856.91 and 66,496.05

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Solution

The fourth proportional to 123,084.63, 169,856.91 and 66,496.05 is: 91,764.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,084.63 : 169,856.91 = 66,496.05 : x
  2. Step 2: Convert to fraction form
    123,084.63/169,856.91 = 66,496.05/x
  3. Step 3: Cross multiply
    123,084.63x = 169,856.91 × 66,496.05
  4. Step 4: Simplify right side
    123,084.63x = 11,294,813,580.21
  5. Step 5: Solve for x
    x = 11,294,813,580.21/123,084.63
  6. Step 6: Final answer
    x = 91,764.61

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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.