Finding the Fourth Proportional to 157,640.51, 217,487.06 and 121,353.05
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Solution
The fourth proportional to 157,640.51, 217,487.06 and 121,353.05 is: 167,423.45
Step by Step Solution
- Step 1: Write the proportion equation
157,640.51 : 217,487.06 = 121,353.05 : x - Step 2: Convert to fraction form
157,640.51/217,487.06 = 121,353.05/x - Step 3: Cross multiply
157,640.51x = 217,487.06 × 121,353.05 - Step 4: Simplify right side
157,640.51x = 26,392,718,458.56 - Step 5: Solve for x
x = 26,392,718,458.56/157,640.51 - Step 6: Final answer
x = 167,423.45
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1.5x scale
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.