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Finding the Fourth Proportional to 134,755.50, 186,035.49 and 81,052.50

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Solution

The fourth proportional to 134,755.50, 186,035.49 and 81,052.50 is: 111,896.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,755.50 : 186,035.49 = 81,052.50 : x
  2. Step 2: Convert to fraction form
    134,755.50/186,035.49 = 81,052.50/x
  3. Step 3: Cross multiply
    134,755.50x = 186,035.49 × 81,052.50
  4. Step 4: Simplify right side
    134,755.50x = 15,078,641,553.23
  5. Step 5: Solve for x
    x = 15,078,641,553.23/134,755.50
  6. Step 6: Final answer
    x = 111,896.30

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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.