Home / 103,623.72-155,435.56-28,743.86

Finding the Fourth Proportional to 103,623.72, 155,435.56 and 28,743.86

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Solution

The fourth proportional to 103,623.72, 155,435.56 and 28,743.86 is: 43,115.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,623.72 : 155,435.56 = 28,743.86 : x
  2. Step 2: Convert to fraction form
    103,623.72/155,435.56 = 28,743.86/x
  3. Step 3: Cross multiply
    103,623.72x = 155,435.56 × 28,743.86
  4. Step 4: Simplify right side
    103,623.72x = 4,467,817,975.66
  5. Step 5: Solve for x
    x = 4,467,817,975.66/103,623.72
  6. Step 6: Final answer
    x = 43,115.78

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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.