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Finding the Fourth Proportional to 122,052.52, 168,432.90 and 68,339.88

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Solution

The fourth proportional to 122,052.52, 168,432.90 and 68,339.88 is: 94,309.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,052.52 : 168,432.90 = 68,339.88 : x
  2. Step 2: Convert to fraction form
    122,052.52/168,432.90 = 68,339.88/x
  3. Step 3: Cross multiply
    122,052.52x = 168,432.90 × 68,339.88
  4. Step 4: Simplify right side
    122,052.52x = 11,510,684,174.05
  5. Step 5: Solve for x
    x = 11,510,684,174.05/122,052.52
  6. Step 6: Final answer
    x = 94,309.27

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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.