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Finding the Fourth Proportional to 100,609.41, 150,918.71 and 71,158.73

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Solution

The fourth proportional to 100,609.41, 150,918.71 and 71,158.73 is: 106,741.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,609.41 : 150,918.71 = 71,158.73 : x
  2. Step 2: Convert to fraction form
    100,609.41/150,918.71 = 71,158.73/x
  3. Step 3: Cross multiply
    100,609.41x = 150,918.71 × 71,158.73
  4. Step 4: Simplify right side
    100,609.41x = 10,739,182,626.45
  5. Step 5: Solve for x
    x = 10,739,182,626.45/100,609.41
  6. Step 6: Final answer
    x = 106,741.33

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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.