Finding the Fourth Proportional to 142,186.15, 213,115.18 and 53,383.02
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Solution
The fourth proportional to 142,186.15, 213,115.18 and 53,383.02 is: 80,012.94
Step by Step Solution
- Step 1: Write the proportion equation
142,186.15 : 213,115.18 = 53,383.02 : x - Step 2: Convert to fraction form
142,186.15/213,115.18 = 53,383.02/x - Step 3: Cross multiply
142,186.15x = 213,115.18 × 53,383.02 - Step 4: Simplify right side
142,186.15x = 11,376,731,916.24 - Step 5: Solve for x
x = 11,376,731,916.24/142,186.15 - Step 6: Final answer
x = 80,012.94
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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.