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Finding the Fourth Proportional to 122,662.65, 169,279.26 and 68,947.50

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Solution

The fourth proportional to 122,662.65, 169,279.26 and 68,947.50 is: 95,150.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,662.65 : 169,279.26 = 68,947.50 : x
  2. Step 2: Convert to fraction form
    122,662.65/169,279.26 = 68,947.50/x
  3. Step 3: Cross multiply
    122,662.65x = 169,279.26 × 68,947.50
  4. Step 4: Simplify right side
    122,662.65x = 11,671,381,778.85
  5. Step 5: Solve for x
    x = 11,671,381,778.85/122,662.65
  6. Step 6: Final answer
    x = 95,150.25

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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.