Home / 103,786.69-155,680.19-28,907.05

Finding the Fourth Proportional to 103,786.69, 155,680.19 and 28,907.05

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Solution

The fourth proportional to 103,786.69, 155,680.19 and 28,907.05 is: 43,360.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,786.69 : 155,680.19 = 28,907.05 : x
  2. Step 2: Convert to fraction form
    103,786.69/155,680.19 = 28,907.05/x
  3. Step 3: Cross multiply
    103,786.69x = 155,680.19 × 28,907.05
  4. Step 4: Simplify right side
    103,786.69x = 4,500,255,036.34
  5. Step 5: Solve for x
    x = 4,500,255,036.34/103,786.69
  6. Step 6: Final answer
    x = 43,360.62

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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.