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Finding the Fourth Proportional to 111,163.36, 153,493.90 and 102,662.36

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Solution

The fourth proportional to 111,163.36, 153,493.90 and 102,662.36 is: 141,755.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,163.36 : 153,493.90 = 102,662.36 : x
  2. Step 2: Convert to fraction form
    111,163.36/153,493.90 = 102,662.36/x
  3. Step 3: Cross multiply
    111,163.36x = 153,493.90 × 102,662.36
  4. Step 4: Simplify right side
    111,163.36x = 15,758,046,019.60
  5. Step 5: Solve for x
    x = 15,758,046,019.60/111,163.36
  6. Step 6: Final answer
    x = 141,755.75

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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.