Home / 211,027.30-291,216.89-120,383.09

Finding the Fourth Proportional to 211,027.30, 291,216.89 and 120,383.09

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Solution

The fourth proportional to 211,027.30, 291,216.89 and 120,383.09 is: 166,128.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,027.30 : 291,216.89 = 120,383.09 : x
  2. Step 2: Convert to fraction form
    211,027.30/291,216.89 = 120,383.09/x
  3. Step 3: Cross multiply
    211,027.30x = 291,216.89 × 120,383.09
  4. Step 4: Simplify right side
    211,027.30x = 35,057,588,476.47
  5. Step 5: Solve for x
    x = 35,057,588,476.47/211,027.30
  6. Step 6: Final answer
    x = 166,128.22

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1.5x scale

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.