Finding the Fourth Proportional to 212,702.49, 319,052.84 and 86,341.66
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Solution
The fourth proportional to 212,702.49, 319,052.84 and 86,341.66 is: 129,512.12
Step by Step Solution
- Step 1: Write the proportion equation
212,702.49 : 319,052.84 = 86,341.66 : x - Step 2: Convert to fraction form
212,702.49/319,052.84 = 86,341.66/x - Step 3: Cross multiply
212,702.49x = 319,052.84 × 86,341.66 - Step 4: Simplify right side
212,702.49x = 27,547,550,603.97 - Step 5: Solve for x
x = 27,547,550,603.97/212,702.49 - Step 6: Final answer
x = 129,512.12
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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.