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Finding the Fourth Proportional to 103,806.23, 155,709.44 and 28,926.59

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Solution

The fourth proportional to 103,806.23, 155,709.44 and 28,926.59 is: 43,389.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,806.23 : 155,709.44 = 28,926.59 : x
  2. Step 2: Convert to fraction form
    103,806.23/155,709.44 = 28,926.59/x
  3. Step 3: Cross multiply
    103,806.23x = 155,709.44 × 28,926.59
  4. Step 4: Simplify right side
    103,806.23x = 4,504,142,315.30
  5. Step 5: Solve for x
    x = 4,504,142,315.30/103,806.23
  6. Step 6: Final answer
    x = 43,389.91

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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.