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Finding the Fourth Proportional to 150,651, 207,819.90 and 89,361.54

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Solution

The fourth proportional to 150,651, 207,819.90 and 89,361.54 is: 123,272.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,651 : 207,819.90 = 89,361.54 : x
  2. Step 2: Convert to fraction form
    150,651/207,819.90 = 89,361.54/x
  3. Step 3: Cross multiply
    150,651x = 207,819.90 × 89,361.54
  4. Step 4: Simplify right side
    150,651x = 18,571,106,306.65
  5. Step 5: Solve for x
    x = 18,571,106,306.65/150,651
  6. Step 6: Final answer
    x = 123,272.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.