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Finding the Fourth Proportional to 121,610.76, 167,826.92 and 67,896.40

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Solution

The fourth proportional to 121,610.76, 167,826.92 and 67,896.40 is: 93,699.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,610.76 : 167,826.92 = 67,896.40 : x
  2. Step 2: Convert to fraction form
    121,610.76/167,826.92 = 67,896.40/x
  3. Step 3: Cross multiply
    121,610.76x = 167,826.92 × 67,896.40
  4. Step 4: Simplify right side
    121,610.76x = 11,394,843,691.09
  5. Step 5: Solve for x
    x = 11,394,843,691.09/121,610.76
  6. Step 6: Final answer
    x = 93,699.30

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1.5x scale

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.