Finding the Fourth Proportional to 154,212.95, 212,812.67 and 86,230.05
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Solution
The fourth proportional to 154,212.95, 212,812.67 and 86,230.05 is: 118,996.80
Step by Step Solution
- Step 1: Write the proportion equation
154,212.95 : 212,812.67 = 86,230.05 : x - Step 2: Convert to fraction form
154,212.95/212,812.67 = 86,230.05/x - Step 3: Cross multiply
154,212.95x = 212,812.67 × 86,230.05 - Step 4: Simplify right side
154,212.95x = 18,350,846,743.58 - Step 5: Solve for x
x = 18,350,846,743.58/154,212.95 - Step 6: Final answer
x = 118,996.80
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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.