Finding the Fourth Proportional to 207,680.96, 286,695.40 and 121,627.98
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Solution
The fourth proportional to 207,680.96, 286,695.40 and 121,627.98 is: 167,902.63
Step by Step Solution
- Step 1: Write the proportion equation
207,680.96 : 286,695.40 = 121,627.98 : x - Step 2: Convert to fraction form
207,680.96/286,695.40 = 121,627.98/x - Step 3: Cross multiply
207,680.96x = 286,695.40 × 121,627.98 - Step 4: Simplify right side
207,680.96x = 34,870,180,335.68 - Step 5: Solve for x
x = 34,870,180,335.68/207,680.96 - Step 6: Final answer
x = 167,902.63
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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.