Home / 203,039.74-280,191.45-112,393.79

Finding the Fourth Proportional to 203,039.74, 280,191.45 and 112,393.79

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Solution

The fourth proportional to 203,039.74, 280,191.45 and 112,393.79 is: 155,101.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,039.74 : 280,191.45 = 112,393.79 : x
  2. Step 2: Convert to fraction form
    203,039.74/280,191.45 = 112,393.79/x
  3. Step 3: Cross multiply
    203,039.74x = 280,191.45 × 112,393.79
  4. Step 4: Simplify right side
    203,039.74x = 31,491,778,991.10
  5. Step 5: Solve for x
    x = 31,491,778,991.10/203,039.74
  6. Step 6: Final answer
    x = 155,101.55

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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.