Home / 108,197.09-149,309.78-65,769.29

Finding the Fourth Proportional to 108,197.09, 149,309.78 and 65,769.29

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Solution

The fourth proportional to 108,197.09, 149,309.78 and 65,769.29 is: 90,760.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,197.09 : 149,309.78 = 65,769.29 : x
  2. Step 2: Convert to fraction form
    108,197.09/149,309.78 = 65,769.29/x
  3. Step 3: Cross multiply
    108,197.09x = 149,309.78 × 65,769.29
  4. Step 4: Simplify right side
    108,197.09x = 9,819,998,220.66
  5. Step 5: Solve for x
    x = 9,819,998,220.66/108,197.09
  6. Step 6: Final answer
    x = 90,760.28

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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.