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Finding the Fourth Proportional to 140,227.80, 209,904.30 and 100,861.80

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Solution

The fourth proportional to 140,227.80, 209,904.30 and 100,861.80 is: 150,978.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,227.80 : 209,904.30 = 100,861.80 : x
  2. Step 2: Convert to fraction form
    140,227.80/209,904.30 = 100,861.80/x
  3. Step 3: Cross multiply
    140,227.80x = 209,904.30 × 100,861.80
  4. Step 4: Simplify right side
    140,227.80x = 21,171,325,525.74
  5. Step 5: Solve for x
    x = 21,171,325,525.74/140,227.80
  6. Step 6: Final answer
    x = 150,978.09

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1.5x scale

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.