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Finding the Fourth Proportional to 108,668.63, 149,963.25 and 63,378.02

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Solution

The fourth proportional to 108,668.63, 149,963.25 and 63,378.02 is: 87,461.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,668.63 : 149,963.25 = 63,378.02 : x
  2. Step 2: Convert to fraction form
    108,668.63/149,963.25 = 63,378.02/x
  3. Step 3: Cross multiply
    108,668.63x = 149,963.25 × 63,378.02
  4. Step 4: Simplify right side
    108,668.63x = 9,504,373,107.95
  5. Step 5: Solve for x
    x = 9,504,373,107.95/108,668.63
  6. Step 6: Final answer
    x = 87,461.98

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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.