Finding the Fourth Proportional to 217,178.68, 299,702.82 and 121,685.08
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Solution
The fourth proportional to 217,178.68, 299,702.82 and 121,685.08 is: 167,923.30
Step by Step Solution
- Step 1: Write the proportion equation
217,178.68 : 299,702.82 = 121,685.08 : x - Step 2: Convert to fraction form
217,178.68/299,702.82 = 121,685.08/x - Step 3: Cross multiply
217,178.68x = 299,702.82 × 121,685.08 - Step 4: Simplify right side
217,178.68x = 36,469,361,627.93 - Step 5: Solve for x
x = 36,469,361,627.93/217,178.68 - Step 6: Final answer
x = 167,923.30
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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.