Finding the Fourth Proportional to 121,202.08, 167,310.48 and 81,481.12
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Solution
The fourth proportional to 121,202.08, 167,310.48 and 81,481.12 is: 112,478.64
Step by Step Solution
- Step 1: Write the proportion equation
121,202.08 : 167,310.48 = 81,481.12 : x - Step 2: Convert to fraction form
121,202.08/167,310.48 = 81,481.12/x - Step 3: Cross multiply
121,202.08x = 167,310.48 × 81,481.12 - Step 4: Simplify right side
121,202.08x = 13,632,645,298.14 - Step 5: Solve for x
x = 13,632,645,298.14/121,202.08 - Step 6: Final answer
x = 112,478.64
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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.