Home / 211,034.30-291,235.20-120,405.02

Finding the Fourth Proportional to 211,034.30, 291,235.20 and 120,405.02

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Solution

The fourth proportional to 211,034.30, 291,235.20 and 120,405.02 is: 166,163.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,034.30 : 291,235.20 = 120,405.02 : x
  2. Step 2: Convert to fraction form
    211,034.30/291,235.20 = 120,405.02/x
  3. Step 3: Cross multiply
    211,034.30x = 291,235.20 × 120,405.02
  4. Step 4: Simplify right side
    211,034.30x = 35,066,180,080.70
  5. Step 5: Solve for x
    x = 35,066,180,080.70/211,034.30
  6. Step 6: Final answer
    x = 166,163.42

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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.