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Finding the Fourth Proportional to 122,355.36, 168,834.24 and 68,638.32

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Solution

The fourth proportional to 122,355.36, 168,834.24 and 68,638.32 is: 94,711.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,355.36 : 168,834.24 = 68,638.32 : x
  2. Step 2: Convert to fraction form
    122,355.36/168,834.24 = 68,638.32/x
  3. Step 3: Cross multiply
    122,355.36x = 168,834.24 × 68,638.32
  4. Step 4: Simplify right side
    122,355.36x = 11,588,498,592.08
  5. Step 5: Solve for x
    x = 11,588,498,592.08/122,355.36
  6. Step 6: Final answer
    x = 94,711.82

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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.