Finding the Fourth Proportional to 157,612.44, 217,585.26 and 121,721.88
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Solution
The fourth proportional to 157,612.44, 217,585.26 and 121,721.88 is: 168,038.05
Step by Step Solution
- Step 1: Write the proportion equation
157,612.44 : 217,585.26 = 121,721.88 : x - Step 2: Convert to fraction form
157,612.44/217,585.26 = 121,721.88/x - Step 3: Cross multiply
157,612.44x = 217,585.26 × 121,721.88 - Step 4: Simplify right side
157,612.44x = 26,484,886,907.49 - Step 5: Solve for x
x = 26,484,886,907.49/157,612.44 - Step 6: Final answer
x = 168,038.05
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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.