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Finding the Fourth Proportional to 108,469.76, 149,662.50 and 63,120.29

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Solution

The fourth proportional to 108,469.76, 149,662.50 and 63,120.29 is: 87,091.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,469.76 : 149,662.50 = 63,120.29 : x
  2. Step 2: Convert to fraction form
    108,469.76/149,662.50 = 63,120.29/x
  3. Step 3: Cross multiply
    108,469.76x = 149,662.50 × 63,120.29
  4. Step 4: Simplify right side
    108,469.76x = 9,446,740,402.13
  5. Step 5: Solve for x
    x = 9,446,740,402.13/108,469.76
  6. Step 6: Final answer
    x = 87,091.00

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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.