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Finding the Fourth Proportional to 122,396.97, 168,772.91 and 84,605.61

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Solution

The fourth proportional to 122,396.97, 168,772.91 and 84,605.61 is: 116,662.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,396.97 : 168,772.91 = 84,605.61 : x
  2. Step 2: Convert to fraction form
    122,396.97/168,772.91 = 84,605.61/x
  3. Step 3: Cross multiply
    122,396.97x = 168,772.91 × 84,605.61
  4. Step 4: Simplify right side
    122,396.97x = 14,279,134,579.00
  5. Step 5: Solve for x
    x = 14,279,134,579.00/122,396.97
  6. Step 6: Final answer
    x = 116,662.48

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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.