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Finding the Fourth Proportional to 121,898.96, 168,219.36 and 68,183.36

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Solution

The fourth proportional to 121,898.96, 168,219.36 and 68,183.36 is: 94,092.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,898.96 : 168,219.36 = 68,183.36 : x
  2. Step 2: Convert to fraction form
    121,898.96/168,219.36 = 68,183.36/x
  3. Step 3: Cross multiply
    121,898.96x = 168,219.36 × 68,183.36
  4. Step 4: Simplify right side
    121,898.96x = 11,469,761,181.85
  5. Step 5: Solve for x
    x = 11,469,761,181.85/121,898.96
  6. Step 6: Final answer
    x = 94,092.36

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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.