Home / 100,420.66-150,634.91-30,299.98

Finding the Fourth Proportional to 100,420.66, 150,634.91 and 30,299.98

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Solution

The fourth proportional to 100,420.66, 150,634.91 and 30,299.98 is: 45,451.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,420.66 : 150,634.91 = 30,299.98 : x
  2. Step 2: Convert to fraction form
    100,420.66/150,634.91 = 30,299.98/x
  3. Step 3: Cross multiply
    100,420.66x = 150,634.91 × 30,299.98
  4. Step 4: Simplify right side
    100,420.66x = 4,564,234,760.30
  5. Step 5: Solve for x
    x = 4,564,234,760.30/100,420.66
  6. Step 6: Final answer
    x = 45,451.15

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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.