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Finding the Fourth Proportional to 122,362.51, 168,857.68 and 67,911.51

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Solution

The fourth proportional to 122,362.51, 168,857.68 and 67,911.51 is: 93,716.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,362.51 : 168,857.68 = 67,911.51 : x
  2. Step 2: Convert to fraction form
    122,362.51/168,857.68 = 67,911.51/x
  3. Step 3: Cross multiply
    122,362.51x = 168,857.68 × 67,911.51
  4. Step 4: Simplify right side
    122,362.51x = 11,467,379,179.61
  5. Step 5: Solve for x
    x = 11,467,379,179.61/122,362.51
  6. Step 6: Final answer
    x = 93,716.44

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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.