Home / 211,060.20-291,290.82-120,395.40

Finding the Fourth Proportional to 211,060.20, 291,290.82 and 120,395.40

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Solution

The fourth proportional to 211,060.20, 291,290.82 and 120,395.40 is: 166,161.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,060.20 : 291,290.82 = 120,395.40 : x
  2. Step 2: Convert to fraction form
    211,060.20/291,290.82 = 120,395.40/x
  3. Step 3: Cross multiply
    211,060.20x = 291,290.82 × 120,395.40
  4. Step 4: Simplify right side
    211,060.20x = 35,070,074,790.23
  5. Step 5: Solve for x
    x = 35,070,074,790.23/211,060.20
  6. Step 6: Final answer
    x = 166,161.48

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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.