Home / 203,119.39-280,285.19-121,431.50

Finding the Fourth Proportional to 203,119.39, 280,285.19 and 121,431.50

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Solution

The fourth proportional to 203,119.39, 280,285.19 and 121,431.50 is: 167,563.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,119.39 : 280,285.19 = 121,431.50 : x
  2. Step 2: Convert to fraction form
    203,119.39/280,285.19 = 121,431.50/x
  3. Step 3: Cross multiply
    203,119.39x = 280,285.19 × 121,431.50
  4. Step 4: Simplify right side
    203,119.39x = 34,035,449,648.06
  5. Step 5: Solve for x
    x = 34,035,449,648.06/203,119.39
  6. Step 6: Final answer
    x = 167,563.77

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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.