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Finding the Fourth Proportional to 122,181.37, 168,619.76 and 68,471.38

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Solution

The fourth proportional to 122,181.37, 168,619.76 and 68,471.38 is: 94,495.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,181.37 : 168,619.76 = 68,471.38 : x
  2. Step 2: Convert to fraction form
    122,181.37/168,619.76 = 68,471.38/x
  3. Step 3: Cross multiply
    122,181.37x = 168,619.76 × 68,471.38
  4. Step 4: Simplify right side
    122,181.37x = 11,545,627,662.47
  5. Step 5: Solve for x
    x = 11,545,627,662.47/122,181.37
  6. Step 6: Final answer
    x = 94,495.81

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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.