Home / 211,791.40-317,168.70-100,853.80

Finding the Fourth Proportional to 211,791.40, 317,168.70 and 100,853.80

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Solution

The fourth proportional to 211,791.40, 317,168.70 and 100,853.80 is: 151,033.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,791.40 : 317,168.70 = 100,853.80 : x
  2. Step 2: Convert to fraction form
    211,791.40/317,168.70 = 100,853.80/x
  3. Step 3: Cross multiply
    211,791.40x = 317,168.70 × 100,853.80
  4. Step 4: Simplify right side
    211,791.40x = 31,987,668,636.06
  5. Step 5: Solve for x
    x = 31,987,668,636.06/211,791.40
  6. Step 6: Final answer
    x = 151,033.84

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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.