Home / 135,680.54-187,277.67-81,969.03

Finding the Fourth Proportional to 135,680.54, 187,277.67 and 81,969.03

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Solution

The fourth proportional to 135,680.54, 187,277.67 and 81,969.03 is: 113,140.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,680.54 : 187,277.67 = 81,969.03 : x
  2. Step 2: Convert to fraction form
    135,680.54/187,277.67 = 81,969.03/x
  3. Step 3: Cross multiply
    135,680.54x = 187,277.67 × 81,969.03
  4. Step 4: Simplify right side
    135,680.54x = 15,350,968,950.56
  5. Step 5: Solve for x
    x = 15,350,968,950.56/135,680.54
  6. Step 6: Final answer
    x = 113,140.54

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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.