Home / 100,828.10-151,198.32-30,690.98

Finding the Fourth Proportional to 100,828.10, 151,198.32 and 30,690.98

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Solution

The fourth proportional to 100,828.10, 151,198.32 and 30,690.98 is: 46,023.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,828.10 : 151,198.32 = 30,690.98 : x
  2. Step 2: Convert to fraction form
    100,828.10/151,198.32 = 30,690.98/x
  3. Step 3: Cross multiply
    100,828.10x = 151,198.32 × 30,690.98
  4. Step 4: Simplify right side
    100,828.10x = 4,640,424,615.15
  5. Step 5: Solve for x
    x = 4,640,424,615.15/100,828.10
  6. Step 6: Final answer
    x = 46,023.13

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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.