Home / 212,933.12-319,399.65-55,161.59

Finding the Fourth Proportional to 212,933.12, 319,399.65 and 55,161.59

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Solution

The fourth proportional to 212,933.12, 319,399.65 and 55,161.59 is: 82,742.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,933.12 : 319,399.65 = 55,161.59 : x
  2. Step 2: Convert to fraction form
    212,933.12/319,399.65 = 55,161.59/x
  3. Step 3: Cross multiply
    212,933.12x = 319,399.65 × 55,161.59
  4. Step 4: Simplify right side
    212,933.12x = 17,618,590,942.45
  5. Step 5: Solve for x
    x = 17,618,590,942.45/212,933.12
  6. Step 6: Final answer
    x = 82,742.37

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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.