Home / 103,768.98-155,653.52-80,111.08

Finding the Fourth Proportional to 103,768.98, 155,653.52 and 80,111.08

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Solution

The fourth proportional to 103,768.98, 155,653.52 and 80,111.08 is: 120,166.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,768.98 : 155,653.52 = 80,111.08 : x
  2. Step 2: Convert to fraction form
    103,768.98/155,653.52 = 80,111.08/x
  3. Step 3: Cross multiply
    103,768.98x = 155,653.52 × 80,111.08
  4. Step 4: Simplify right side
    103,768.98x = 12,469,570,511.46
  5. Step 5: Solve for x
    x = 12,469,570,511.46/103,768.98
  6. Step 6: Final answer
    x = 120,166.65

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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.