Finding the Fourth Proportional to 212,780.20, 319,170.30 and 124,133.80
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Solution
The fourth proportional to 212,780.20, 319,170.30 and 124,133.80 is: 186,200.70
Step by Step Solution
- Step 1: Write the proportion equation
212,780.20 : 319,170.30 = 124,133.80 : x - Step 2: Convert to fraction form
212,780.20/319,170.30 = 124,133.80/x - Step 3: Cross multiply
212,780.20x = 319,170.30 × 124,133.80 - Step 4: Simplify right side
212,780.20x = 39,619,822,186.14 - Step 5: Solve for x
x = 39,619,822,186.14/212,780.20 - Step 6: Final answer
x = 186,200.70
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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.