Home / 211,857.12-317,780.82-106,647.84

Finding the Fourth Proportional to 211,857.12, 317,780.82 and 106,647.84

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Solution

The fourth proportional to 211,857.12, 317,780.82 and 106,647.84 is: 159,969.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,857.12 : 317,780.82 = 106,647.84 : x
  2. Step 2: Convert to fraction form
    211,857.12/317,780.82 = 106,647.84/x
  3. Step 3: Cross multiply
    211,857.12x = 317,780.82 × 106,647.84
  4. Step 4: Simplify right side
    211,857.12x = 33,890,638,046.43
  5. Step 5: Solve for x
    x = 33,890,638,046.43/211,857.12
  6. Step 6: Final answer
    x = 159,969.31

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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.