Home / 211,025.42-291,231.72-120,360.60

Finding the Fourth Proportional to 211,025.42, 291,231.72 and 120,360.60

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Solution

The fourth proportional to 211,025.42, 291,231.72 and 120,360.60 is: 166,107.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,025.42 : 291,231.72 = 120,360.60 : x
  2. Step 2: Convert to fraction form
    211,025.42/291,231.72 = 120,360.60/x
  3. Step 3: Cross multiply
    211,025.42x = 291,231.72 × 120,360.60
  4. Step 4: Simplify right side
    211,025.42x = 35,052,824,558.23
  5. Step 5: Solve for x
    x = 35,052,824,558.23/211,025.42
  6. Step 6: Final answer
    x = 166,107.12

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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.