Home / 100,906.08-151,358.70-30,785.16

Finding the Fourth Proportional to 100,906.08, 151,358.70 and 30,785.16

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Solution

The fourth proportional to 100,906.08, 151,358.70 and 30,785.16 is: 46,177.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,906.08 : 151,358.70 = 30,785.16 : x
  2. Step 2: Convert to fraction form
    100,906.08/151,358.70 = 30,785.16/x
  3. Step 3: Cross multiply
    100,906.08x = 151,358.70 × 30,785.16
  4. Step 4: Simplify right side
    100,906.08x = 4,659,601,796.89
  5. Step 5: Solve for x
    x = 4,659,601,796.89/100,906.08
  6. Step 6: Final answer
    x = 46,177.61

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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.