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Finding the Fourth Proportional to 108,864, 163,179.36 and 45,668.21

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Solution

The fourth proportional to 108,864, 163,179.36 and 45,668.21 is: 68,453.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,864 : 163,179.36 = 45,668.21 : x
  2. Step 2: Convert to fraction form
    108,864/163,179.36 = 45,668.21/x
  3. Step 3: Cross multiply
    108,864x = 163,179.36 × 45,668.21
  4. Step 4: Simplify right side
    108,864x = 7,452,108,464.25
  5. Step 5: Solve for x
    x = 7,452,108,464.25/108,864
  6. Step 6: Final answer
    x = 68,453.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.