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Finding the Fourth Proportional to 118,635.62, 163,717.17 and 64,920.64

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Solution

The fourth proportional to 118,635.62, 163,717.17 and 64,920.64 is: 89,590.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,635.62 : 163,717.17 = 64,920.64 : x
  2. Step 2: Convert to fraction form
    118,635.62/163,717.17 = 64,920.64/x
  3. Step 3: Cross multiply
    118,635.62x = 163,717.17 × 64,920.64
  4. Step 4: Simplify right side
    118,635.62x = 10,628,623,455.39
  5. Step 5: Solve for x
    x = 10,628,623,455.39/118,635.62
  6. Step 6: Final answer
    x = 89,590.49

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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.