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Finding the Fourth Proportional to 109,743, 151,451.82 and 61,995.12

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Solution

The fourth proportional to 109,743, 151,451.82 and 61,995.12 is: 85,556.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,743 : 151,451.82 = 61,995.12 : x
  2. Step 2: Convert to fraction form
    109,743/151,451.82 = 61,995.12/x
  3. Step 3: Cross multiply
    109,743x = 151,451.82 × 61,995.12
  4. Step 4: Simplify right side
    109,743x = 9,389,273,755.12
  5. Step 5: Solve for x
    x = 9,389,273,755.12/109,743
  6. Step 6: Final answer
    x = 85,556.93

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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.