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Finding the Fourth Proportional to 122,644.56, 169,245.48 and 68,928.24

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Solution

The fourth proportional to 122,644.56, 169,245.48 and 68,928.24 is: 95,118.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,644.56 : 169,245.48 = 68,928.24 : x
  2. Step 2: Convert to fraction form
    122,644.56/169,245.48 = 68,928.24/x
  3. Step 3: Cross multiply
    122,644.56x = 169,245.48 × 68,928.24
  4. Step 4: Simplify right side
    122,644.56x = 11,665,793,064.36
  5. Step 5: Solve for x
    x = 11,665,793,064.36/122,644.56
  6. Step 6: Final answer
    x = 95,118.72

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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.