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Finding the Fourth Proportional to 117,756.88, 162,447.39 and 69,976.42

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Solution

The fourth proportional to 117,756.88, 162,447.39 and 69,976.42 is: 96,533.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,756.88 : 162,447.39 = 69,976.42 : x
  2. Step 2: Convert to fraction form
    117,756.88/162,447.39 = 69,976.42/x
  3. Step 3: Cross multiply
    117,756.88x = 162,447.39 × 69,976.42
  4. Step 4: Simplify right side
    117,756.88x = 11,367,486,790.54
  5. Step 5: Solve for x
    x = 11,367,486,790.54/117,756.88
  6. Step 6: Final answer
    x = 96,533.53

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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.