Home / 231,987.11-320,136.89-135,184.80

Finding the Fourth Proportional to 231,987.11, 320,136.89 and 135,184.80

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Solution

The fourth proportional to 231,987.11, 320,136.89 and 135,184.80 is: 186,551.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,987.11 : 320,136.89 = 135,184.80 : x
  2. Step 2: Convert to fraction form
    231,987.11/320,136.89 = 135,184.80/x
  3. Step 3: Cross multiply
    231,987.11x = 320,136.89 × 135,184.80
  4. Step 4: Simplify right side
    231,987.11x = 43,277,640,771.35
  5. Step 5: Solve for x
    x = 43,277,640,771.35/231,987.11
  6. Step 6: Final answer
    x = 186,551.92

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1.5x scale

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.