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Finding the Fourth Proportional to 122,371.35, 168,871.41 and 68,655.21

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Solution

The fourth proportional to 122,371.35, 168,871.41 and 68,655.21 is: 94,743.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,371.35 : 168,871.41 = 68,655.21 : x
  2. Step 2: Convert to fraction form
    122,371.35/168,871.41 = 68,655.21/x
  3. Step 3: Cross multiply
    122,371.35x = 168,871.41 × 68,655.21
  4. Step 4: Simplify right side
    122,371.35x = 11,593,902,116.55
  5. Step 5: Solve for x
    x = 11,593,902,116.55/122,371.35
  6. Step 6: Final answer
    x = 94,743.60

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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.