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Finding the Fourth Proportional to 110,993, 153,170.98 and 71,249

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Solution

The fourth proportional to 110,993, 153,170.98 and 71,249 is: 98,324.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,993 : 153,170.98 = 71,249 : x
  2. Step 2: Convert to fraction form
    110,993/153,170.98 = 71,249/x
  3. Step 3: Cross multiply
    110,993x = 153,170.98 × 71,249
  4. Step 4: Simplify right side
    110,993x = 10,913,279,154.02
  5. Step 5: Solve for x
    x = 10,913,279,154.02/110,993
  6. Step 6: Final answer
    x = 98,324.03

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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.