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Finding the Fourth Proportional to 103,395.40, 155,121.90 and 50,806.60

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Solution

The fourth proportional to 103,395.40, 155,121.90 and 50,806.60 is: 76,224.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,395.40 : 155,121.90 = 50,806.60 : x
  2. Step 2: Convert to fraction form
    103,395.40/155,121.90 = 50,806.60/x
  3. Step 3: Cross multiply
    103,395.40x = 155,121.90 × 50,806.60
  4. Step 4: Simplify right side
    103,395.40x = 7,881,216,324.54
  5. Step 5: Solve for x
    x = 7,881,216,324.54/103,395.40
  6. Step 6: Final answer
    x = 76,224.05

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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.