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Finding the Fourth Proportional to 122,351.22, 168,867.74 and 79,835.94

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Solution

The fourth proportional to 122,351.22, 168,867.74 and 79,835.94 is: 110,188.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,351.22 : 168,867.74 = 79,835.94 : x
  2. Step 2: Convert to fraction form
    122,351.22/168,867.74 = 79,835.94/x
  3. Step 3: Cross multiply
    122,351.22x = 168,867.74 × 79,835.94
  4. Step 4: Simplify right side
    122,351.22x = 13,481,714,359.40
  5. Step 5: Solve for x
    x = 13,481,714,359.40/122,351.22
  6. Step 6: Final answer
    x = 110,188.64

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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.