Finding the Fourth Proportional to 189,679.29, 261,754.36 and 103,636.44
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Solution
The fourth proportional to 189,679.29, 261,754.36 and 103,636.44 is: 143,016.61
Step by Step Solution
- Step 1: Write the proportion equation
189,679.29 : 261,754.36 = 103,636.44 : x - Step 2: Convert to fraction form
189,679.29/261,754.36 = 103,636.44/x - Step 3: Cross multiply
189,679.29x = 261,754.36 × 103,636.44 - Step 4: Simplify right side
189,679.29x = 27,127,289,321.08 - Step 5: Solve for x
x = 27,127,289,321.08/189,679.29 - Step 6: Final answer
x = 143,016.61
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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.