Home / 103,619.06-155,428.57-28,739.20

Finding the Fourth Proportional to 103,619.06, 155,428.57 and 28,739.20

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Solution

The fourth proportional to 103,619.06, 155,428.57 and 28,739.20 is: 43,108.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,619.06 : 155,428.57 = 28,739.20 : x
  2. Step 2: Convert to fraction form
    103,619.06/155,428.57 = 28,739.20/x
  3. Step 3: Cross multiply
    103,619.06x = 155,428.57 × 28,739.20
  4. Step 4: Simplify right side
    103,619.06x = 4,466,892,758.94
  5. Step 5: Solve for x
    x = 4,466,892,758.94/103,619.06
  6. Step 6: Final answer
    x = 43,108.79

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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.