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Finding the Fourth Proportional to 108,668, 149,962.38 and 63,377.40

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Solution

The fourth proportional to 108,668, 149,962.38 and 63,377.40 is: 87,461.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,668 : 149,962.38 = 63,377.40 : x
  2. Step 2: Convert to fraction form
    108,668/149,962.38 = 63,377.40/x
  3. Step 3: Cross multiply
    108,668x = 149,962.38 × 63,377.40
  4. Step 4: Simplify right side
    108,668x = 9,504,225,742.21
  5. Step 5: Solve for x
    x = 9,504,225,742.21/108,668
  6. Step 6: Final answer
    x = 87,461.13

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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.