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Finding the Fourth Proportional to 117,687.74, 162,404.60 and 63,971.64

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Solution

The fourth proportional to 117,687.74, 162,404.60 and 63,971.64 is: 88,278.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,687.74 : 162,404.60 = 63,971.64 : x
  2. Step 2: Convert to fraction form
    117,687.74/162,404.60 = 63,971.64/x
  3. Step 3: Cross multiply
    117,687.74x = 162,404.60 × 63,971.64
  4. Step 4: Simplify right side
    117,687.74x = 10,389,288,285.69
  5. Step 5: Solve for x
    x = 10,389,288,285.69/117,687.74
  6. Step 6: Final answer
    x = 88,278.43

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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.