Home / 236,941.20-355,287-87,142.80

Finding the Fourth Proportional to 236,941.20, 355,287 and 87,142.80

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Solution

The fourth proportional to 236,941.20, 355,287 and 87,142.80 is: 130,668.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,941.20 : 355,287 = 87,142.80 : x
  2. Step 2: Convert to fraction form
    236,941.20/355,287 = 87,142.80/x
  3. Step 3: Cross multiply
    236,941.20x = 355,287 × 87,142.80
  4. Step 4: Simplify right side
    236,941.20x = 30,960,703,983.60
  5. Step 5: Solve for x
    x = 30,960,703,983.60/236,941.20
  6. Step 6: Final answer
    x = 130,668.30

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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.