Home / 103,638.44-155,457.66-28,758.60

Finding the Fourth Proportional to 103,638.44, 155,457.66 and 28,758.60

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Solution

The fourth proportional to 103,638.44, 155,457.66 and 28,758.60 is: 43,137.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,638.44 : 155,457.66 = 28,758.60 : x
  2. Step 2: Convert to fraction form
    103,638.44/155,457.66 = 28,758.60/x
  3. Step 3: Cross multiply
    103,638.44x = 155,457.66 × 28,758.60
  4. Step 4: Simplify right side
    103,638.44x = 4,470,744,660.88
  5. Step 5: Solve for x
    x = 4,470,744,660.88/103,638.44
  6. Step 6: Final answer
    x = 43,137.90

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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.