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Finding the Fourth Proportional to 118,614, 163,687.32 and 65,622

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Solution

The fourth proportional to 118,614, 163,687.32 and 65,622 is: 90,558.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,614 : 163,687.32 = 65,622 : x
  2. Step 2: Convert to fraction form
    118,614/163,687.32 = 65,622/x
  3. Step 3: Cross multiply
    118,614x = 163,687.32 × 65,622
  4. Step 4: Simplify right side
    118,614x = 10,741,489,313.04
  5. Step 5: Solve for x
    x = 10,741,489,313.04/118,614
  6. Step 6: Final answer
    x = 90,558.36

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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.