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Finding the Fourth Proportional to 122,622.56, 169,223.12 and 68,917.92

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Solution

The fourth proportional to 122,622.56, 169,223.12 and 68,917.92 is: 95,108.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,622.56 : 169,223.12 = 68,917.92 : x
  2. Step 2: Convert to fraction form
    122,622.56/169,223.12 = 68,917.92/x
  3. Step 3: Cross multiply
    122,622.56x = 169,223.12 × 68,917.92
  4. Step 4: Simplify right side
    122,622.56x = 11,662,505,446.31
  5. Step 5: Solve for x
    x = 11,662,505,446.31/122,622.56
  6. Step 6: Final answer
    x = 95,108.97

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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.