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Finding the Fourth Proportional to 192,661.80, 288,987.30 and 87,480.60

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Solution

The fourth proportional to 192,661.80, 288,987.30 and 87,480.60 is: 131,218.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,661.80 : 288,987.30 = 87,480.60 : x
  2. Step 2: Convert to fraction form
    192,661.80/288,987.30 = 87,480.60/x
  3. Step 3: Cross multiply
    192,661.80x = 288,987.30 × 87,480.60
  4. Step 4: Simplify right side
    192,661.80x = 25,280,782,396.38
  5. Step 5: Solve for x
    x = 25,280,782,396.38/192,661.80
  6. Step 6: Final answer
    x = 131,218.45

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1.5x scale

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.