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Finding the Fourth Proportional to 100,662.20, 150,992.74 and 25,782.20

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Solution

The fourth proportional to 100,662.20, 150,992.74 and 25,782.20 is: 38,673.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,662.20 : 150,992.74 = 25,782.20 : x
  2. Step 2: Convert to fraction form
    100,662.20/150,992.74 = 25,782.20/x
  3. Step 3: Cross multiply
    100,662.20x = 150,992.74 × 25,782.20
  4. Step 4: Simplify right side
    100,662.20x = 3,892,925,021.23
  5. Step 5: Solve for x
    x = 3,892,925,021.23/100,662.20
  6. Step 6: Final answer
    x = 38,673.16

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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.