Home / 211,137.58-291,372.27-120,505.78

Finding the Fourth Proportional to 211,137.58, 291,372.27 and 120,505.78

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Solution

The fourth proportional to 211,137.58, 291,372.27 and 120,505.78 is: 166,299.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,137.58 : 291,372.27 = 120,505.78 : x
  2. Step 2: Convert to fraction form
    211,137.58/291,372.27 = 120,505.78/x
  3. Step 3: Cross multiply
    211,137.58x = 291,372.27 × 120,505.78
  4. Step 4: Simplify right side
    211,137.58x = 35,112,042,666.72
  5. Step 5: Solve for x
    x = 35,112,042,666.72/211,137.58
  6. Step 6: Final answer
    x = 166,299.35

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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.