Finding the Fourth Proportional to 121,993.21, 168,354.44 and 68,278.11
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Solution
The fourth proportional to 121,993.21, 168,354.44 and 68,278.11 is: 94,225.92
Step by Step Solution
- Step 1: Write the proportion equation
121,993.21 : 168,354.44 = 68,278.11 : x - Step 2: Convert to fraction form
121,993.21/168,354.44 = 68,278.11/x - Step 3: Cross multiply
121,993.21x = 168,354.44 × 68,278.11 - Step 4: Simplify right side
121,993.21x = 11,494,922,973.31 - Step 5: Solve for x
x = 11,494,922,973.31/121,993.21 - Step 6: Final answer
x = 94,225.92
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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.