Finding the Fourth Proportional to 231,656.18, 319,715.68 and 129,720.46
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Solution
The fourth proportional to 231,656.18, 319,715.68 and 129,720.46 is: 179,031.12
Step by Step Solution
- Step 1: Write the proportion equation
231,656.18 : 319,715.68 = 129,720.46 : x - Step 2: Convert to fraction form
231,656.18/319,715.68 = 129,720.46/x - Step 3: Cross multiply
231,656.18x = 319,715.68 × 129,720.46 - Step 4: Simplify right side
231,656.18x = 41,473,665,078.81 - Step 5: Solve for x
x = 41,473,665,078.81/231,656.18 - Step 6: Final answer
x = 179,031.12
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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.