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Finding the Fourth Proportional to 122,879.91, 169,573.86 and 69,164.90

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Solution

The fourth proportional to 122,879.91, 169,573.86 and 69,164.90 is: 95,447.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,879.91 : 169,573.86 = 69,164.90 : x
  2. Step 2: Convert to fraction form
    122,879.91/169,573.86 = 69,164.90/x
  3. Step 3: Cross multiply
    122,879.91x = 169,573.86 × 69,164.90
  4. Step 4: Simplify right side
    122,879.91x = 11,728,558,221.64
  5. Step 5: Solve for x
    x = 11,728,558,221.64/122,879.91
  6. Step 6: Final answer
    x = 95,447.32

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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.