Finding the Fourth Proportional to 189,682.99, 261,759.43 and 103,640.08
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Solution
The fourth proportional to 189,682.99, 261,759.43 and 103,640.08 is: 143,021.62
Step by Step Solution
- Step 1: Write the proportion equation
189,682.99 : 261,759.43 = 103,640.08 : x - Step 2: Convert to fraction form
189,682.99/261,759.43 = 103,640.08/x - Step 3: Cross multiply
189,682.99x = 261,759.43 × 103,640.08 - Step 4: Simplify right side
189,682.99x = 27,128,768,265.95 - Step 5: Solve for x
x = 27,128,768,265.95/189,682.99 - Step 6: Final answer
x = 143,021.62
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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.