Home / 100,986.20-151,479.30-30,865.40

Finding the Fourth Proportional to 100,986.20, 151,479.30 and 30,865.40

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Solution

The fourth proportional to 100,986.20, 151,479.30 and 30,865.40 is: 46,298.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,986.20 : 151,479.30 = 30,865.40 : x
  2. Step 2: Convert to fraction form
    100,986.20/151,479.30 = 30,865.40/x
  3. Step 3: Cross multiply
    100,986.20x = 151,479.30 × 30,865.40
  4. Step 4: Simplify right side
    100,986.20x = 4,675,469,186.22
  5. Step 5: Solve for x
    x = 4,675,469,186.22/100,986.20
  6. Step 6: Final answer
    x = 46,298.10

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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.