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Finding the Fourth Proportional to 111,331.97, 153,647.84 and 61,040.69

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Solution

The fourth proportional to 111,331.97, 153,647.84 and 61,040.69 is: 84,241.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,331.97 : 153,647.84 = 61,040.69 : x
  2. Step 2: Convert to fraction form
    111,331.97/153,647.84 = 61,040.69/x
  3. Step 3: Cross multiply
    111,331.97x = 153,647.84 × 61,040.69
  4. Step 4: Simplify right side
    111,331.97x = 9,378,769,787.80
  5. Step 5: Solve for x
    x = 9,378,769,787.80/111,331.97
  6. Step 6: Final answer
    x = 84,241.48

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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.