Home / 211,940.20-317,620.86-106,830.28

Finding the Fourth Proportional to 211,940.20, 317,620.86 and 106,830.28

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Solution

The fourth proportional to 211,940.20, 317,620.86 and 106,830.28 is: 160,099.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,940.20 : 317,620.86 = 106,830.28 : x
  2. Step 2: Convert to fraction form
    211,940.20/317,620.86 = 106,830.28/x
  3. Step 3: Cross multiply
    211,940.20x = 317,620.86 × 106,830.28
  4. Step 4: Simplify right side
    211,940.20x = 33,931,525,407.64
  5. Step 5: Solve for x
    x = 33,931,525,407.64/211,940.20
  6. Step 6: Final answer
    x = 160,099.53

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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.