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Finding the Fourth Proportional to 150,855.97, 208,158.12 and 87,181.48

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Solution

The fourth proportional to 150,855.97, 208,158.12 and 87,181.48 is: 120,297.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,855.97 : 208,158.12 = 87,181.48 : x
  2. Step 2: Convert to fraction form
    150,855.97/208,158.12 = 87,181.48/x
  3. Step 3: Cross multiply
    150,855.97x = 208,158.12 × 87,181.48
  4. Step 4: Simplify right side
    150,855.97x = 18,147,532,975.62
  5. Step 5: Solve for x
    x = 18,147,532,975.62/150,855.97
  6. Step 6: Final answer
    x = 120,297.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.