Home / 211,573.53-291,991.24-120,911.78

Finding the Fourth Proportional to 211,573.53, 291,991.24 and 120,911.78

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Solution

The fourth proportional to 211,573.53, 291,991.24 and 120,911.78 is: 166,869.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,573.53 : 291,991.24 = 120,911.78 : x
  2. Step 2: Convert to fraction form
    211,573.53/291,991.24 = 120,911.78/x
  3. Step 3: Cross multiply
    211,573.53x = 291,991.24 × 120,911.78
  4. Step 4: Simplify right side
    211,573.53x = 35,305,179,968.25
  5. Step 5: Solve for x
    x = 35,305,179,968.25/211,573.53
  6. Step 6: Final answer
    x = 166,869.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.