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Finding the Fourth Proportional to 117,697.41, 162,420.51 and 63,983.78

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Solution

The fourth proportional to 117,697.41, 162,420.51 and 63,983.78 is: 88,296.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,697.41 : 162,420.51 = 63,983.78 : x
  2. Step 2: Convert to fraction form
    117,697.41/162,420.51 = 63,983.78/x
  3. Step 3: Cross multiply
    117,697.41x = 162,420.51 × 63,983.78
  4. Step 4: Simplify right side
    117,697.41x = 10,392,278,179.33
  5. Step 5: Solve for x
    x = 10,392,278,179.33/117,697.41
  6. Step 6: Final answer
    x = 88,296.57

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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.