Finding the Fourth Proportional to 217,164.76, 299,716.95 and 121,691.68
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Solution
The fourth proportional to 217,164.76, 299,716.95 and 121,691.68 is: 167,951.09
Step by Step Solution
- Step 1: Write the proportion equation
217,164.76 : 299,716.95 = 121,691.68 : x - Step 2: Convert to fraction form
217,164.76/299,716.95 = 121,691.68/x - Step 3: Cross multiply
217,164.76x = 299,716.95 × 121,691.68 - Step 4: Simplify right side
217,164.76x = 36,473,059,169.98 - Step 5: Solve for x
x = 36,473,059,169.98/217,164.76 - Step 6: Final answer
x = 167,951.09
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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.