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Finding the Fourth Proportional to 100,640.34, 150,975.09 and 30,525.66

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Solution

The fourth proportional to 100,640.34, 150,975.09 and 30,525.66 is: 45,792.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,640.34 : 150,975.09 = 30,525.66 : x
  2. Step 2: Convert to fraction form
    100,640.34/150,975.09 = 30,525.66/x
  3. Step 3: Cross multiply
    100,640.34x = 150,975.09 × 30,525.66
  4. Step 4: Simplify right side
    100,640.34x = 4,608,614,265.81
  5. Step 5: Solve for x
    x = 4,608,614,265.81/100,640.34
  6. Step 6: Final answer
    x = 45,792.91

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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.