Home / 211,126.79-291,359.69-120,480.95

Finding the Fourth Proportional to 211,126.79, 291,359.69 and 120,480.95

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Solution

The fourth proportional to 211,126.79, 291,359.69 and 120,480.95 is: 166,266.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,126.79 : 291,359.69 = 120,480.95 : x
  2. Step 2: Convert to fraction form
    211,126.79/291,359.69 = 120,480.95/x
  3. Step 3: Cross multiply
    211,126.79x = 291,359.69 × 120,480.95
  4. Step 4: Simplify right side
    211,126.79x = 35,103,290,183.70
  5. Step 5: Solve for x
    x = 35,103,290,183.70/211,126.79
  6. Step 6: Final answer
    x = 166,266.40

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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.