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Finding the Fourth Proportional to 110,884.85, 153,022.57 and 63,138.39

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Solution

The fourth proportional to 110,884.85, 153,022.57 and 63,138.39 is: 87,131.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,884.85 : 153,022.57 = 63,138.39 : x
  2. Step 2: Convert to fraction form
    110,884.85/153,022.57 = 63,138.39/x
  3. Step 3: Cross multiply
    110,884.85x = 153,022.57 × 63,138.39
  4. Step 4: Simplify right side
    110,884.85x = 9,661,597,971.78
  5. Step 5: Solve for x
    x = 9,661,597,971.78/110,884.85
  6. Step 6: Final answer
    x = 87,131.81

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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.