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Finding the Fourth Proportional to 118,694, 163,797.72 and 65,702

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Solution

The fourth proportional to 118,694, 163,797.72 and 65,702 is: 90,668.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,694 : 163,797.72 = 65,702 : x
  2. Step 2: Convert to fraction form
    118,694/163,797.72 = 65,702/x
  3. Step 3: Cross multiply
    118,694x = 163,797.72 × 65,702
  4. Step 4: Simplify right side
    118,694x = 10,761,837,799.44
  5. Step 5: Solve for x
    x = 10,761,837,799.44/118,694
  6. Step 6: Final answer
    x = 90,668.76

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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.