Finding the Fourth Proportional to 155,120.62, 214,086.50 and 87,137.62
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Solution
The fourth proportional to 155,120.62, 214,086.50 and 87,137.62 is: 120,261.18
Step by Step Solution
- Step 1: Write the proportion equation
155,120.62 : 214,086.50 = 87,137.62 : x - Step 2: Convert to fraction form
155,120.62/214,086.50 = 87,137.62/x - Step 3: Cross multiply
155,120.62x = 214,086.50 × 87,137.62 - Step 4: Simplify right side
155,120.62x = 18,654,988,084.13 - Step 5: Solve for x
x = 18,654,988,084.13/155,120.62 - Step 6: Final answer
x = 120,261.18
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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.