Home / 203,150.94-280,209.07-139,378.02

Finding the Fourth Proportional to 203,150.94, 280,209.07 and 139,378.02

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Solution

The fourth proportional to 203,150.94, 280,209.07 and 139,378.02 is: 192,246.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,150.94 : 280,209.07 = 139,378.02 : x
  2. Step 2: Convert to fraction form
    203,150.94/280,209.07 = 139,378.02/x
  3. Step 3: Cross multiply
    203,150.94x = 280,209.07 × 139,378.02
  4. Step 4: Simplify right side
    203,150.94x = 39,054,984,486.08
  5. Step 5: Solve for x
    x = 39,054,984,486.08/203,150.94
  6. Step 6: Final answer
    x = 192,246.15

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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.