Finding the Fourth Proportional to 189,664.76, 261,755.48 and 103,636.82
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Solution
The fourth proportional to 189,664.76, 261,755.48 and 103,636.82 is: 143,028.70
Step by Step Solution
- Step 1: Write the proportion equation
189,664.76 : 261,755.48 = 103,636.82 : x - Step 2: Convert to fraction form
189,664.76/261,755.48 = 103,636.82/x - Step 3: Cross multiply
189,664.76x = 261,755.48 × 103,636.82 - Step 4: Simplify right side
189,664.76x = 27,127,503,737.81 - Step 5: Solve for x
x = 27,127,503,737.81/189,664.76 - Step 6: Final answer
x = 143,028.70
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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.