Home / 211,078.72-291,279-126,242.56

Finding the Fourth Proportional to 211,078.72, 291,279 and 126,242.56

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Solution

The fourth proportional to 211,078.72, 291,279 and 126,242.56 is: 174,208.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,078.72 : 291,279 = 126,242.56 : x
  2. Step 2: Convert to fraction form
    211,078.72/291,279 = 126,242.56/x
  3. Step 3: Cross multiply
    211,078.72x = 291,279 × 126,242.56
  4. Step 4: Simplify right side
    211,078.72x = 36,771,806,634.24
  5. Step 5: Solve for x
    x = 36,771,806,634.24/211,078.72
  6. Step 6: Final answer
    x = 174,208.97

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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.