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Finding the Fourth Proportional to 201,120.20, 301,680.30 and 122,258.60

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Solution

The fourth proportional to 201,120.20, 301,680.30 and 122,258.60 is: 183,387.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,120.20 : 301,680.30 = 122,258.60 : x
  2. Step 2: Convert to fraction form
    201,120.20/301,680.30 = 122,258.60/x
  3. Step 3: Cross multiply
    201,120.20x = 301,680.30 × 122,258.60
  4. Step 4: Simplify right side
    201,120.20x = 36,883,011,125.58
  5. Step 5: Solve for x
    x = 36,883,011,125.58/201,120.20
  6. Step 6: Final answer
    x = 183,387.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.