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Finding the Fourth Proportional to 100,343.76, 150,540.63 and 70,819.26

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Solution

The fourth proportional to 100,343.76, 150,540.63 and 70,819.26 is: 106,246.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,343.76 : 150,540.63 = 70,819.26 : x
  2. Step 2: Convert to fraction form
    100,343.76/150,540.63 = 70,819.26/x
  3. Step 3: Cross multiply
    100,343.76x = 150,540.63 × 70,819.26
  4. Step 4: Simplify right side
    100,343.76x = 10,661,176,016.53
  5. Step 5: Solve for x
    x = 10,661,176,016.53/100,343.76
  6. Step 6: Final answer
    x = 106,246.53

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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.