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Finding the Fourth Proportional to 104,903.67, 144,821.81 and 81,884.07

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Solution

The fourth proportional to 104,903.67, 144,821.81 and 81,884.07 is: 113,042.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,903.67 : 144,821.81 = 81,884.07 : x
  2. Step 2: Convert to fraction form
    104,903.67/144,821.81 = 81,884.07/x
  3. Step 3: Cross multiply
    104,903.67x = 144,821.81 × 81,884.07
  4. Step 4: Simplify right side
    104,903.67x = 11,858,598,818.15
  5. Step 5: Solve for x
    x = 11,858,598,818.15/104,903.67
  6. Step 6: Final answer
    x = 113,042.75

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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.