Home / 211,115.44-291,267.03-120,406.21

Finding the Fourth Proportional to 211,115.44, 291,267.03 and 120,406.21

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Solution

The fourth proportional to 211,115.44, 291,267.03 and 120,406.21 is: 166,119.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,115.44 : 291,267.03 = 120,406.21 : x
  2. Step 2: Convert to fraction form
    211,115.44/291,267.03 = 120,406.21/x
  3. Step 3: Cross multiply
    211,115.44x = 291,267.03 × 120,406.21
  4. Step 4: Simplify right side
    211,115.44x = 35,070,359,180.26
  5. Step 5: Solve for x
    x = 35,070,359,180.26/211,115.44
  6. Step 6: Final answer
    x = 166,119.35

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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.