Home / 201,990.40-302,548.20-131,131.60

Finding the Fourth Proportional to 201,990.40, 302,548.20 and 131,131.60

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Solution

The fourth proportional to 201,990.40, 302,548.20 and 131,131.60 is: 196,413.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,990.40 : 302,548.20 = 131,131.60 : x
  2. Step 2: Convert to fraction form
    201,990.40/302,548.20 = 131,131.60/x
  3. Step 3: Cross multiply
    201,990.40x = 302,548.20 × 131,131.60
  4. Step 4: Simplify right side
    201,990.40x = 39,673,629,543.12
  5. Step 5: Solve for x
    x = 39,673,629,543.12/201,990.40
  6. Step 6: Final answer
    x = 196,413.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.