Finding the Fourth Proportional to 153,714.80, 212,122.20 and 85,733.84
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Solution
The fourth proportional to 153,714.80, 212,122.20 and 85,733.84 is: 118,310.34
Step by Step Solution
- Step 1: Write the proportion equation
153,714.80 : 212,122.20 = 85,733.84 : x - Step 2: Convert to fraction form
153,714.80/212,122.20 = 85,733.84/x - Step 3: Cross multiply
153,714.80x = 212,122.20 × 85,733.84 - Step 4: Simplify right side
153,714.80x = 18,186,050,755.25 - Step 5: Solve for x
x = 18,186,050,755.25/153,714.80 - Step 6: Final answer
x = 118,310.34
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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.