Home / 103,620.24-155,255.40-82,800

Finding the Fourth Proportional to 103,620.24, 155,255.40 and 82,800

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Solution

The fourth proportional to 103,620.24, 155,255.40 and 82,800 is: 124,060.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,620.24 : 155,255.40 = 82,800 : x
  2. Step 2: Convert to fraction form
    103,620.24/155,255.40 = 82,800/x
  3. Step 3: Cross multiply
    103,620.24x = 155,255.40 × 82,800
  4. Step 4: Simplify right side
    103,620.24x = 12,855,147,120
  5. Step 5: Solve for x
    x = 12,855,147,120/103,620.24
  6. Step 6: Final answer
    x = 124,060.19

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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.