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Finding the Fourth Proportional to 100,011.20, 149,995.20 and 43,851.20

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Solution

The fourth proportional to 100,011.20, 149,995.20 and 43,851.20 is: 65,767.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,011.20 : 149,995.20 = 43,851.20 : x
  2. Step 2: Convert to fraction form
    100,011.20/149,995.20 = 43,851.20/x
  3. Step 3: Cross multiply
    100,011.20x = 149,995.20 × 43,851.20
  4. Step 4: Simplify right side
    100,011.20x = 6,577,469,514.24
  5. Step 5: Solve for x
    x = 6,577,469,514.24/100,011.20
  6. Step 6: Final answer
    x = 65,767.33

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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.