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Finding the Fourth Proportional to 122,683.92, 169,299.44 and 68,235.80

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Solution

The fourth proportional to 122,683.92, 169,299.44 and 68,235.80 is: 94,162.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,683.92 : 169,299.44 = 68,235.80 : x
  2. Step 2: Convert to fraction form
    122,683.92/169,299.44 = 68,235.80/x
  3. Step 3: Cross multiply
    122,683.92x = 169,299.44 × 68,235.80
  4. Step 4: Simplify right side
    122,683.92x = 11,552,282,727.95
  5. Step 5: Solve for x
    x = 11,552,282,727.95/122,683.92
  6. Step 6: Final answer
    x = 94,162.97

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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.