Finding the Fourth Proportional to 217,133.96, 299,624.82 and 121,644.68
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Solution
The fourth proportional to 217,133.96, 299,624.82 and 121,644.68 is: 167,858.43
Step by Step Solution
- Step 1: Write the proportion equation
217,133.96 : 299,624.82 = 121,644.68 : x - Step 2: Convert to fraction form
217,133.96/299,624.82 = 121,644.68/x - Step 3: Cross multiply
217,133.96x = 299,624.82 × 121,644.68 - Step 4: Simplify right side
217,133.96x = 36,447,765,348.96 - Step 5: Solve for x
x = 36,447,765,348.96/217,133.96 - Step 6: Final answer
x = 167,858.43
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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.