Home / 100,400.94-150,511.92-38,115.18

Finding the Fourth Proportional to 100,400.94, 150,511.92 and 38,115.18

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Solution

The fourth proportional to 100,400.94, 150,511.92 and 38,115.18 is: 57,138.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,400.94 : 150,511.92 = 38,115.18 : x
  2. Step 2: Convert to fraction form
    100,400.94/150,511.92 = 38,115.18/x
  3. Step 3: Cross multiply
    100,400.94x = 150,511.92 × 38,115.18
  4. Step 4: Simplify right side
    100,400.94x = 5,736,788,922.95
  5. Step 5: Solve for x
    x = 5,736,788,922.95/100,400.94
  6. Step 6: Final answer
    x = 57,138.80

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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.