Finding the Fourth Proportional to 189,314.11, 261,253.47 and 104,431.15
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Solution
The fourth proportional to 189,314.11, 261,253.47 and 104,431.15 is: 144,114.99
Step by Step Solution
- Step 1: Write the proportion equation
189,314.11 : 261,253.47 = 104,431.15 : x - Step 2: Convert to fraction form
189,314.11/261,253.47 = 104,431.15/x - Step 3: Cross multiply
189,314.11x = 261,253.47 × 104,431.15 - Step 4: Simplify right side
189,314.11x = 27,283,000,313.59 - Step 5: Solve for x
x = 27,283,000,313.59/189,314.11 - Step 6: Final answer
x = 144,114.99
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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.