Home / 203,015.03-280,160.37-111,135.51

Finding the Fourth Proportional to 203,015.03, 280,160.37 and 111,135.51

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Solution

The fourth proportional to 203,015.03, 280,160.37 and 111,135.51 is: 153,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,015.03 : 280,160.37 = 111,135.51 : x
  2. Step 2: Convert to fraction form
    203,015.03/280,160.37 = 111,135.51/x
  3. Step 3: Cross multiply
    203,015.03x = 280,160.37 × 111,135.51
  4. Step 4: Simplify right side
    203,015.03x = 31,135,765,601.74
  5. Step 5: Solve for x
    x = 31,135,765,601.74/203,015.03
  6. Step 6: Final answer
    x = 153,366.80

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1.5x scale

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.