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Finding the Fourth Proportional to 121,752.96, 168,027.72 and 73,997.04

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Solution

The fourth proportional to 121,752.96, 168,027.72 and 73,997.04 is: 102,121.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,752.96 : 168,027.72 = 73,997.04 : x
  2. Step 2: Convert to fraction form
    121,752.96/168,027.72 = 73,997.04/x
  3. Step 3: Cross multiply
    121,752.96x = 168,027.72 × 73,997.04
  4. Step 4: Simplify right side
    121,752.96x = 12,433,553,917.95
  5. Step 5: Solve for x
    x = 12,433,553,917.95/121,752.96
  6. Step 6: Final answer
    x = 102,121.16

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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.