Home / 211,043.97-291,268.47-120,379.15

Finding the Fourth Proportional to 211,043.97, 291,268.47 and 120,379.15

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Solution

The fourth proportional to 211,043.97, 291,268.47 and 120,379.15 is: 166,139.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,043.97 : 291,268.47 = 120,379.15 : x
  2. Step 2: Convert to fraction form
    211,043.97/291,268.47 = 120,379.15/x
  3. Step 3: Cross multiply
    211,043.97x = 291,268.47 × 120,379.15
  4. Step 4: Simplify right side
    211,043.97x = 35,062,650,840.40
  5. Step 5: Solve for x
    x = 35,062,650,840.40/211,043.97
  6. Step 6: Final answer
    x = 166,139.08

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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.