Finding the Fourth Proportional to 154,212.24, 212,813.28 and 86,231.68
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Solution
The fourth proportional to 154,212.24, 212,813.28 and 86,231.68 is: 118,999.94
Step by Step Solution
- Step 1: Write the proportion equation
154,212.24 : 212,813.28 = 86,231.68 : x - Step 2: Convert to fraction form
154,212.24/212,813.28 = 86,231.68/x - Step 3: Cross multiply
154,212.24x = 212,813.28 × 86,231.68 - Step 4: Simplify right side
154,212.24x = 18,351,246,660.71 - Step 5: Solve for x
x = 18,351,246,660.71/154,212.24 - Step 6: Final answer
x = 118,999.94
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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.