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Finding the Fourth Proportional to 122,379.29, 168,883.22 and 68,669.30

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Solution

The fourth proportional to 122,379.29, 168,883.22 and 68,669.30 is: 94,763.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,379.29 : 168,883.22 = 68,669.30 : x
  2. Step 2: Convert to fraction form
    122,379.29/168,883.22 = 68,669.30/x
  3. Step 3: Cross multiply
    122,379.29x = 168,883.22 × 68,669.30
  4. Step 4: Simplify right side
    122,379.29x = 11,597,091,311.38
  5. Step 5: Solve for x
    x = 11,597,091,311.38/122,379.29
  6. Step 6: Final answer
    x = 94,763.52

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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.