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Finding the Fourth Proportional to 203,597.94, 280,867.71 and 121,870.44

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Solution

The fourth proportional to 203,597.94, 280,867.71 and 121,870.44 is: 168,122.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,597.94 : 280,867.71 = 121,870.44 : x
  2. Step 2: Convert to fraction form
    203,597.94/280,867.71 = 121,870.44/x
  3. Step 3: Cross multiply
    203,597.94x = 280,867.71 × 121,870.44
  4. Step 4: Simplify right side
    203,597.94x = 34,229,471,399.49
  5. Step 5: Solve for x
    x = 34,229,471,399.49/203,597.94
  6. Step 6: Final answer
    x = 168,122.88

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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.