Home / 199,231.20-299,016.90-80,987.40

Finding the Fourth Proportional to 199,231.20, 299,016.90 and 80,987.40

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Solution

The fourth proportional to 199,231.20, 299,016.90 and 80,987.40 is: 121,550.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,231.20 : 299,016.90 = 80,987.40 : x
  2. Step 2: Convert to fraction form
    199,231.20/299,016.90 = 80,987.40/x
  3. Step 3: Cross multiply
    199,231.20x = 299,016.90 × 80,987.40
  4. Step 4: Simplify right side
    199,231.20x = 24,216,601,287.06
  5. Step 5: Solve for x
    x = 24,216,601,287.06/199,231.20
  6. Step 6: Final answer
    x = 121,550.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.