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Finding the Fourth Proportional to 117,372.78, 161,976.51 and 63,659.58

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Solution

The fourth proportional to 117,372.78, 161,976.51 and 63,659.58 is: 87,851.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,372.78 : 161,976.51 = 63,659.58 : x
  2. Step 2: Convert to fraction form
    117,372.78/161,976.51 = 63,659.58/x
  3. Step 3: Cross multiply
    117,372.78x = 161,976.51 × 63,659.58
  4. Step 4: Simplify right side
    117,372.78x = 10,311,356,596.47
  5. Step 5: Solve for x
    x = 10,311,356,596.47/117,372.78
  6. Step 6: Final answer
    x = 87,851.35

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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.