Home / 100,976.09-151,458.62-30,855.40

Finding the Fourth Proportional to 100,976.09, 151,458.62 and 30,855.40

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Solution

The fourth proportional to 100,976.09, 151,458.62 and 30,855.40 is: 46,281.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,976.09 : 151,458.62 = 30,855.40 : x
  2. Step 2: Convert to fraction form
    100,976.09/151,458.62 = 30,855.40/x
  3. Step 3: Cross multiply
    100,976.09x = 151,458.62 × 30,855.40
  4. Step 4: Simplify right side
    100,976.09x = 4,673,315,770.62
  5. Step 5: Solve for x
    x = 4,673,315,770.62/100,976.09
  6. Step 6: Final answer
    x = 46,281.41

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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.