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Finding the Fourth Proportional to 100,806.20, 151,302.74 and 50,921.33

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Solution

The fourth proportional to 100,806.20, 151,302.74 and 50,921.33 is: 76,429.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,806.20 : 151,302.74 = 50,921.33 : x
  2. Step 2: Convert to fraction form
    100,806.20/151,302.74 = 50,921.33/x
  3. Step 3: Cross multiply
    100,806.20x = 151,302.74 × 50,921.33
  4. Step 4: Simplify right side
    100,806.20x = 7,704,537,018.94
  5. Step 5: Solve for x
    x = 7,704,537,018.94/100,806.20
  6. Step 6: Final answer
    x = 76,429.20

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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.