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Finding the Fourth Proportional to 122,464.70, 168,999.80 and 68,748.33

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Solution

The fourth proportional to 122,464.70, 168,999.80 and 68,748.33 is: 94,871.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,464.70 : 168,999.80 = 68,748.33 : x
  2. Step 2: Convert to fraction form
    122,464.70/168,999.80 = 68,748.33/x
  3. Step 3: Cross multiply
    122,464.70x = 168,999.80 × 68,748.33
  4. Step 4: Simplify right side
    122,464.70x = 11,618,454,697.05
  5. Step 5: Solve for x
    x = 11,618,454,697.05/122,464.70
  6. Step 6: Final answer
    x = 94,871.87

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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.