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Finding the Fourth Proportional to 122,463.58, 168,999.64 and 68,748.70

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Solution

The fourth proportional to 122,463.58, 168,999.64 and 68,748.70 is: 94,873.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,463.58 : 168,999.64 = 68,748.70 : x
  2. Step 2: Convert to fraction form
    122,463.58/168,999.64 = 68,748.70/x
  3. Step 3: Cross multiply
    122,463.58x = 168,999.64 × 68,748.70
  4. Step 4: Simplify right side
    122,463.58x = 11,618,505,550.47
  5. Step 5: Solve for x
    x = 11,618,505,550.47/122,463.58
  6. Step 6: Final answer
    x = 94,873.15

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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.