Home / 103,619.30-155,428.93-28,739.44

Finding the Fourth Proportional to 103,619.30, 155,428.93 and 28,739.44

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Solution

The fourth proportional to 103,619.30, 155,428.93 and 28,739.44 is: 43,109.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,619.30 : 155,428.93 = 28,739.44 : x
  2. Step 2: Convert to fraction form
    103,619.30/155,428.93 = 28,739.44/x
  3. Step 3: Cross multiply
    103,619.30x = 155,428.93 × 28,739.44
  4. Step 4: Simplify right side
    103,619.30x = 4,466,940,408.00
  5. Step 5: Solve for x
    x = 4,466,940,408.00/103,619.30
  6. Step 6: Final answer
    x = 43,109.15

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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.