Home / 211,081.96-291,287.42-120,436.28

Finding the Fourth Proportional to 211,081.96, 291,287.42 and 120,436.28

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Solution

The fourth proportional to 211,081.96, 291,287.42 and 120,436.28 is: 166,198.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,081.96 : 291,287.42 = 120,436.28 : x
  2. Step 2: Convert to fraction form
    211,081.96/291,287.42 = 120,436.28/x
  3. Step 3: Cross multiply
    211,081.96x = 291,287.42 × 120,436.28
  4. Step 4: Simplify right side
    211,081.96x = 35,081,571,216.98
  5. Step 5: Solve for x
    x = 35,081,571,216.98/211,081.96
  6. Step 6: Final answer
    x = 166,198.82

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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.