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Finding the Fourth Proportional to 117,678.40, 162,392.46 and 63,963.64

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Solution

The fourth proportional to 117,678.40, 162,392.46 and 63,963.64 is: 88,267.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,678.40 : 162,392.46 = 63,963.64 : x
  2. Step 2: Convert to fraction form
    117,678.40/162,392.46 = 63,963.64/x
  3. Step 3: Cross multiply
    117,678.40x = 162,392.46 × 63,963.64
  4. Step 4: Simplify right side
    117,678.40x = 10,387,212,850.15
  5. Step 5: Solve for x
    x = 10,387,212,850.15/117,678.40
  6. Step 6: Final answer
    x = 88,267.79

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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.