Home / 211,031.92-291,251.78-120,367.10

Finding the Fourth Proportional to 211,031.92, 291,251.78 and 120,367.10

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Solution

The fourth proportional to 211,031.92, 291,251.78 and 120,367.10 is: 166,122.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,031.92 : 291,251.78 = 120,367.10 : x
  2. Step 2: Convert to fraction form
    211,031.92/291,251.78 = 120,367.10/x
  3. Step 3: Cross multiply
    211,031.92x = 291,251.78 × 120,367.10
  4. Step 4: Simplify right side
    211,031.92x = 35,057,132,128.44
  5. Step 5: Solve for x
    x = 35,057,132,128.44/211,031.92
  6. Step 6: Final answer
    x = 166,122.41

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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.