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Finding the Fourth Proportional to 117,718, 162,414.93 and 66,722.56

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Solution

The fourth proportional to 117,718, 162,414.93 and 66,722.56 is: 92,056.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,718 : 162,414.93 = 66,722.56 : x
  2. Step 2: Convert to fraction form
    117,718/162,414.93 = 66,722.56/x
  3. Step 3: Cross multiply
    117,718x = 162,414.93 × 66,722.56
  4. Step 4: Simplify right side
    117,718x = 10,836,739,911.82
  5. Step 5: Solve for x
    x = 10,836,739,911.82/117,718
  6. Step 6: Final answer
    x = 92,056.78

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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.