Finding the Fourth Proportional to 122,427.30, 168,949.67 and 68,712.31
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Solution
The fourth proportional to 122,427.30, 168,949.67 and 68,712.31 is: 94,822.99
Step by Step Solution
- Step 1: Write the proportion equation
122,427.30 : 168,949.67 = 68,712.31 : x - Step 2: Convert to fraction form
122,427.30/168,949.67 = 68,712.31/x - Step 3: Cross multiply
122,427.30x = 168,949.67 × 68,712.31 - Step 4: Simplify right side
122,427.30x = 11,608,922,904.78 - Step 5: Solve for x
x = 11,608,922,904.78/122,427.30 - Step 6: Final answer
x = 94,822.99
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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.