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Finding the Fourth Proportional to 100,364.21, 150,571.61 and 70,839.71

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Solution

The fourth proportional to 100,364.21, 150,571.61 and 70,839.71 is: 106,277.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,364.21 : 150,571.61 = 70,839.71 : x
  2. Step 2: Convert to fraction form
    100,364.21/150,571.61 = 70,839.71/x
  3. Step 3: Cross multiply
    100,364.21x = 150,571.61 × 70,839.71
  4. Step 4: Simplify right side
    100,364.21x = 10,666,448,079.58
  5. Step 5: Solve for x
    x = 10,666,448,079.58/100,364.21
  6. Step 6: Final answer
    x = 106,277.41

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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.