Home / 201,786.31-278,466.99-111,142.60

Finding the Fourth Proportional to 201,786.31, 278,466.99 and 111,142.60

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Solution

The fourth proportional to 201,786.31, 278,466.99 and 111,142.60 is: 153,377.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,786.31 : 278,466.99 = 111,142.60 : x
  2. Step 2: Convert to fraction form
    201,786.31/278,466.99 = 111,142.60/x
  3. Step 3: Cross multiply
    201,786.31x = 278,466.99 × 111,142.60
  4. Step 4: Simplify right side
    201,786.31x = 30,949,545,282.77
  5. Step 5: Solve for x
    x = 30,949,545,282.77/201,786.31
  6. Step 6: Final answer
    x = 153,377.82

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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.