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Finding the Fourth Proportional to 122,532.89, 169,099.16 and 68,819.04

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Solution

The fourth proportional to 122,532.89, 169,099.16 and 68,819.04 is: 94,972.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,532.89 : 169,099.16 = 68,819.04 : x
  2. Step 2: Convert to fraction form
    122,532.89/169,099.16 = 68,819.04/x
  3. Step 3: Cross multiply
    122,532.89x = 169,099.16 × 68,819.04
  4. Step 4: Simplify right side
    122,532.89x = 11,637,241,511.91
  5. Step 5: Solve for x
    x = 11,637,241,511.91/122,532.89
  6. Step 6: Final answer
    x = 94,972.39

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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.