Home / 103,638.17-155,441.79-28,750.50

Finding the Fourth Proportional to 103,638.17, 155,441.79 and 28,750.50

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Solution

The fourth proportional to 103,638.17, 155,441.79 and 28,750.50 is: 43,121.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,638.17 : 155,441.79 = 28,750.50 : x
  2. Step 2: Convert to fraction form
    103,638.17/155,441.79 = 28,750.50/x
  3. Step 3: Cross multiply
    103,638.17x = 155,441.79 × 28,750.50
  4. Step 4: Simplify right side
    103,638.17x = 4,469,029,183.40
  5. Step 5: Solve for x
    x = 4,469,029,183.40/103,638.17
  6. Step 6: Final answer
    x = 43,121.46

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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.