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Finding the Fourth Proportional to 100,997.55, 151,460.89 and 55,396.09

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Solution

The fourth proportional to 100,997.55, 151,460.89 and 55,396.09 is: 83,074.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,997.55 : 151,460.89 = 55,396.09 : x
  2. Step 2: Convert to fraction form
    100,997.55/151,460.89 = 55,396.09/x
  3. Step 3: Cross multiply
    100,997.55x = 151,460.89 × 55,396.09
  4. Step 4: Simplify right side
    100,997.55x = 8,390,341,093.92
  5. Step 5: Solve for x
    x = 8,390,341,093.92/100,997.55
  6. Step 6: Final answer
    x = 83,074.70

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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.