Home / 201,965.77-278,700.09-111,316.75

Finding the Fourth Proportional to 201,965.77, 278,700.09 and 111,316.75

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Solution

The fourth proportional to 201,965.77, 278,700.09 and 111,316.75 is: 153,610.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,965.77 : 278,700.09 = 111,316.75 : x
  2. Step 2: Convert to fraction form
    201,965.77/278,700.09 = 111,316.75/x
  3. Step 3: Cross multiply
    201,965.77x = 278,700.09 × 111,316.75
  4. Step 4: Simplify right side
    201,965.77x = 31,023,987,755.48
  5. Step 5: Solve for x
    x = 31,023,987,755.48/201,965.77
  6. Step 6: Final answer
    x = 153,610.13

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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.