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Finding the Fourth Proportional to 135,542.27, 186,986.99 and 81,810.11

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Solution

The fourth proportional to 135,542.27, 186,986.99 and 81,810.11 is: 112,860.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,542.27 : 186,986.99 = 81,810.11 : x
  2. Step 2: Convert to fraction form
    135,542.27/186,986.99 = 81,810.11/x
  3. Step 3: Cross multiply
    135,542.27x = 186,986.99 × 81,810.11
  4. Step 4: Simplify right side
    135,542.27x = 15,297,424,876.48
  5. Step 5: Solve for x
    x = 15,297,424,876.48/135,542.27
  6. Step 6: Final answer
    x = 112,860.92

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.