Finding the Fourth Proportional to 217,180.74, 299,721.42 and 121,718.19
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Solution
The fourth proportional to 217,180.74, 299,721.42 and 121,718.19 is: 167,977.83
Step by Step Solution
- Step 1: Write the proportion equation
217,180.74 : 299,721.42 = 121,718.19 : x - Step 2: Convert to fraction form
217,180.74/299,721.42 = 121,718.19/x - Step 3: Cross multiply
217,180.74x = 299,721.42 × 121,718.19 - Step 4: Simplify right side
217,180.74x = 36,481,548,746.63 - Step 5: Solve for x
x = 36,481,548,746.63/217,180.74 - Step 6: Final answer
x = 167,977.83
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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.