Finding the Fourth Proportional to 153,692.73, 212,097.20 and 85,714.09
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Solution
The fourth proportional to 153,692.73, 212,097.20 and 85,714.09 is: 118,286.12
Step by Step Solution
- Step 1: Write the proportion equation
153,692.73 : 212,097.20 = 85,714.09 : x - Step 2: Convert to fraction form
153,692.73/212,097.20 = 85,714.09/x - Step 3: Cross multiply
153,692.73x = 212,097.20 × 85,714.09 - Step 4: Simplify right side
153,692.73x = 18,179,717,000.49 - Step 5: Solve for x
x = 18,179,717,000.49/153,692.73 - Step 6: Final answer
x = 118,286.12
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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.