Home / 231,987.25-320,136.96-136,500.13

Finding the Fourth Proportional to 231,987.25, 320,136.96 and 136,500.13

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Solution

The fourth proportional to 231,987.25, 320,136.96 and 136,500.13 is: 188,366.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,987.25 : 320,136.96 = 136,500.13 : x
  2. Step 2: Convert to fraction form
    231,987.25/320,136.96 = 136,500.13/x
  3. Step 3: Cross multiply
    231,987.25x = 320,136.96 × 136,500.13
  4. Step 4: Simplify right side
    231,987.25x = 43,698,736,657.80
  5. Step 5: Solve for x
    x = 43,698,736,657.80/231,987.25
  6. Step 6: Final answer
    x = 188,366.98

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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.