Home / 201,971.07-278,721.99-111,330.54

Finding the Fourth Proportional to 201,971.07, 278,721.99 and 111,330.54

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Solution

The fourth proportional to 201,971.07, 278,721.99 and 111,330.54 is: 153,637.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,971.07 : 278,721.99 = 111,330.54 : x
  2. Step 2: Convert to fraction form
    201,971.07/278,721.99 = 111,330.54/x
  3. Step 3: Cross multiply
    201,971.07x = 278,721.99 × 111,330.54
  4. Step 4: Simplify right side
    201,971.07x = 31,030,269,656.57
  5. Step 5: Solve for x
    x = 31,030,269,656.57/201,971.07
  6. Step 6: Final answer
    x = 153,637.20

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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.