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Finding the Fourth Proportional to 122,221.62, 168,664.32 and 68,506.56

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Solution

The fourth proportional to 122,221.62, 168,664.32 and 68,506.56 is: 94,538.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,221.62 : 168,664.32 = 68,506.56 : x
  2. Step 2: Convert to fraction form
    122,221.62/168,664.32 = 68,506.56/x
  3. Step 3: Cross multiply
    122,221.62x = 168,664.32 × 68,506.56
  4. Step 4: Simplify right side
    122,221.62x = 11,554,612,357.94
  5. Step 5: Solve for x
    x = 11,554,612,357.94/122,221.62
  6. Step 6: Final answer
    x = 94,538.20

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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.