Home / 103,768.98-155,690.25-51,215.37

Finding the Fourth Proportional to 103,768.98, 155,690.25 and 51,215.37

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Solution

The fourth proportional to 103,768.98, 155,690.25 and 51,215.37 is: 76,841.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,768.98 : 155,690.25 = 51,215.37 : x
  2. Step 2: Convert to fraction form
    103,768.98/155,690.25 = 51,215.37/x
  3. Step 3: Cross multiply
    103,768.98x = 155,690.25 × 51,215.37
  4. Step 4: Simplify right side
    103,768.98x = 7,973,733,759.14
  5. Step 5: Solve for x
    x = 7,973,733,759.14/103,768.98
  6. Step 6: Final answer
    x = 76,841.21

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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.