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Finding the Fourth Proportional to 118,344.97, 163,315.19 and 64,629.97

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Solution

The fourth proportional to 118,344.97, 163,315.19 and 64,629.97 is: 89,188.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,344.97 : 163,315.19 = 64,629.97 : x
  2. Step 2: Convert to fraction form
    118,344.97/163,315.19 = 64,629.97/x
  3. Step 3: Cross multiply
    118,344.97x = 163,315.19 × 64,629.97
  4. Step 4: Simplify right side
    118,344.97x = 10,555,055,583.53
  5. Step 5: Solve for x
    x = 10,555,055,583.53/118,344.97
  6. Step 6: Final answer
    x = 89,188.88

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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.