Finding the Fourth Proportional to 121,872.96, 168,183.48 and 68,157.36
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Solution
The fourth proportional to 121,872.96, 168,183.48 and 68,157.36 is: 94,056.48
Step by Step Solution
- Step 1: Write the proportion equation
121,872.96 : 168,183.48 = 68,157.36 : x - Step 2: Convert to fraction form
121,872.96/168,183.48 = 68,157.36/x - Step 3: Cross multiply
121,872.96x = 168,183.48 × 68,157.36 - Step 4: Simplify right side
121,872.96x = 11,462,941,992.41 - Step 5: Solve for x
x = 11,462,941,992.41/121,872.96 - Step 6: Final answer
x = 94,056.48
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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.