Finding the Fourth Proportional to 189,072.13, 283,628.95 and 76,736.02
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Solution
The fourth proportional to 189,072.13, 283,628.95 and 76,736.02 is: 115,112.46
Step by Step Solution
- Step 1: Write the proportion equation
189,072.13 : 283,628.95 = 76,736.02 : x - Step 2: Convert to fraction form
189,072.13/283,628.95 = 76,736.02/x - Step 3: Cross multiply
189,072.13x = 283,628.95 × 76,736.02 - Step 4: Simplify right side
189,072.13x = 21,764,557,349.07 - Step 5: Solve for x
x = 21,764,557,349.07/189,072.13 - Step 6: Final answer
x = 115,112.46
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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.