Home / 211,135.04-291,371.07-120,489.20

Finding the Fourth Proportional to 211,135.04, 291,371.07 and 120,489.20

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Solution

The fourth proportional to 211,135.04, 291,371.07 and 120,489.20 is: 166,277.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,135.04 : 291,371.07 = 120,489.20 : x
  2. Step 2: Convert to fraction form
    211,135.04/291,371.07 = 120,489.20/x
  3. Step 3: Cross multiply
    211,135.04x = 291,371.07 × 120,489.20
  4. Step 4: Simplify right side
    211,135.04x = 35,107,065,670.59
  5. Step 5: Solve for x
    x = 35,107,065,670.59/211,135.04
  6. Step 6: Final answer
    x = 166,277.78

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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.