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Finding the Fourth Proportional to 171,611.81, 236,561.78 and 120,481.10

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Solution

The fourth proportional to 171,611.81, 236,561.78 and 120,481.10 is: 166,079.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,611.81 : 236,561.78 = 120,481.10 : x
  2. Step 2: Convert to fraction form
    171,611.81/236,561.78 = 120,481.10/x
  3. Step 3: Cross multiply
    171,611.81x = 236,561.78 × 120,481.10
  4. Step 4: Simplify right side
    171,611.81x = 28,501,221,687.14
  5. Step 5: Solve for x
    x = 28,501,221,687.14/171,611.81
  6. Step 6: Final answer
    x = 166,079.61

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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.