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Finding the Fourth Proportional to 201,609.45, 302,376.51 and 81,634.68

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Solution

The fourth proportional to 201,609.45, 302,376.51 and 81,634.68 is: 122,436.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,609.45 : 302,376.51 = 81,634.68 : x
  2. Step 2: Convert to fraction form
    201,609.45/302,376.51 = 81,634.68/x
  3. Step 3: Cross multiply
    201,609.45x = 302,376.51 × 81,634.68
  4. Step 4: Simplify right side
    201,609.45x = 24,684,409,633.37
  5. Step 5: Solve for x
    x = 24,684,409,633.37/201,609.45
  6. Step 6: Final answer
    x = 122,436.77

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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.