Home / 205,136.60-307,791.30-111,709.40

Finding the Fourth Proportional to 205,136.60, 307,791.30 and 111,709.40

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Solution

The fourth proportional to 205,136.60, 307,791.30 and 111,709.40 is: 167,611.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,136.60 : 307,791.30 = 111,709.40 : x
  2. Step 2: Convert to fraction form
    205,136.60/307,791.30 = 111,709.40/x
  3. Step 3: Cross multiply
    205,136.60x = 307,791.30 × 111,709.40
  4. Step 4: Simplify right side
    205,136.60x = 34,383,181,448.22
  5. Step 5: Solve for x
    x = 34,383,181,448.22/205,136.60
  6. Step 6: Final answer
    x = 167,611.15

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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.