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Finding the Fourth Proportional to 100,451.20, 150,849.60 and 71,075.20

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Solution

The fourth proportional to 100,451.20, 150,849.60 and 71,075.20 is: 106,735.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,451.20 : 150,849.60 = 71,075.20 : x
  2. Step 2: Convert to fraction form
    100,451.20/150,849.60 = 71,075.20/x
  3. Step 3: Cross multiply
    100,451.20x = 150,849.60 × 71,075.20
  4. Step 4: Simplify right side
    100,451.20x = 10,721,665,489.92
  5. Step 5: Solve for x
    x = 10,721,665,489.92/100,451.20
  6. Step 6: Final answer
    x = 106,735.07

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1.5x scale

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.