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Finding the Fourth Proportional to 100,256.39, 150,384.69 and 30,135.70

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Solution

The fourth proportional to 100,256.39, 150,384.69 and 30,135.70 is: 45,203.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,256.39 : 150,384.69 = 30,135.70 : x
  2. Step 2: Convert to fraction form
    100,256.39/150,384.69 = 30,135.70/x
  3. Step 3: Cross multiply
    100,256.39x = 150,384.69 × 30,135.70
  4. Step 4: Simplify right side
    100,256.39x = 4,531,947,752.21
  5. Step 5: Solve for x
    x = 4,531,947,752.21/100,256.39
  6. Step 6: Final answer
    x = 45,203.58

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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.