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Finding the Fourth Proportional to 123,334.52, 170,201.66 and 66,745.90

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Solution

The fourth proportional to 123,334.52, 170,201.66 and 66,745.90 is: 92,109.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,334.52 : 170,201.66 = 66,745.90 : x
  2. Step 2: Convert to fraction form
    123,334.52/170,201.66 = 66,745.90/x
  3. Step 3: Cross multiply
    123,334.52x = 170,201.66 × 66,745.90
  4. Step 4: Simplify right side
    123,334.52x = 11,360,262,378.52
  5. Step 5: Solve for x
    x = 11,360,262,378.52/123,334.52
  6. Step 6: Final answer
    x = 92,109.35

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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.