Home / 135,413.09-186,857.03-80,954.50

Finding the Fourth Proportional to 135,413.09, 186,857.03 and 80,954.50

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Solution

The fourth proportional to 135,413.09, 186,857.03 and 80,954.50 is: 111,709.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,413.09 : 186,857.03 = 80,954.50 : x
  2. Step 2: Convert to fraction form
    135,413.09/186,857.03 = 80,954.50/x
  3. Step 3: Cross multiply
    135,413.09x = 186,857.03 × 80,954.50
  4. Step 4: Simplify right side
    135,413.09x = 15,126,916,096.08
  5. Step 5: Solve for x
    x = 15,126,916,096.08/135,413.09
  6. Step 6: Final answer
    x = 111,709.41

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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.