Home / 201,820.69-278,534.43-111,185.95

Finding the Fourth Proportional to 201,820.69, 278,534.43 and 111,185.95

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Solution

The fourth proportional to 201,820.69, 278,534.43 and 111,185.95 is: 153,448.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,820.69 : 278,534.43 = 111,185.95 : x
  2. Step 2: Convert to fraction form
    201,820.69/278,534.43 = 111,185.95/x
  3. Step 3: Cross multiply
    201,820.69x = 278,534.43 × 111,185.95
  4. Step 4: Simplify right side
    201,820.69x = 30,969,115,207.26
  5. Step 5: Solve for x
    x = 30,969,115,207.26/201,820.69
  6. Step 6: Final answer
    x = 153,448.66

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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.