Finding the Fourth Proportional to 189,211.11, 261,107.96 and 103,170.75
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Solution
The fourth proportional to 189,211.11, 261,107.96 and 103,170.75 is: 142,373.79
Step by Step Solution
- Step 1: Write the proportion equation
189,211.11 : 261,107.96 = 103,170.75 : x - Step 2: Convert to fraction form
189,211.11/261,107.96 = 103,170.75/x - Step 3: Cross multiply
189,211.11x = 261,107.96 × 103,170.75 - Step 4: Simplify right side
189,211.11x = 26,938,703,548.32 - Step 5: Solve for x
x = 26,938,703,548.32/189,211.11 - Step 6: Final answer
x = 142,373.79
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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.