Home / 100,910.80-151,364.98-30,790.32

Finding the Fourth Proportional to 100,910.80, 151,364.98 and 30,790.32

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Solution

The fourth proportional to 100,910.80, 151,364.98 and 30,790.32 is: 46,185.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,910.80 : 151,364.98 = 30,790.32 : x
  2. Step 2: Convert to fraction form
    100,910.80/151,364.98 = 30,790.32/x
  3. Step 3: Cross multiply
    100,910.80x = 151,364.98 × 30,790.32
  4. Step 4: Simplify right side
    100,910.80x = 4,660,576,170.99
  5. Step 5: Solve for x
    x = 4,660,576,170.99/100,910.80
  6. Step 6: Final answer
    x = 46,185.11

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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.