Home / 100,979.20-151,468.16-30,858.24

Finding the Fourth Proportional to 100,979.20, 151,468.16 and 30,858.24

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Solution

The fourth proportional to 100,979.20, 151,468.16 and 30,858.24 is: 46,287.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,979.20 : 151,468.16 = 30,858.24 : x
  2. Step 2: Convert to fraction form
    100,979.20/151,468.16 = 30,858.24/x
  3. Step 3: Cross multiply
    100,979.20x = 151,468.16 × 30,858.24
  4. Step 4: Simplify right side
    100,979.20x = 4,674,040,833.64
  5. Step 5: Solve for x
    x = 4,674,040,833.64/100,979.20
  6. Step 6: Final answer
    x = 46,287.16

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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.