Finding the Fourth Proportional to 157,557.68, 217,431.96 and 85,937.44
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Solution
The fourth proportional to 157,557.68, 217,431.96 and 85,937.44 is: 118,594.96
Step by Step Solution
- Step 1: Write the proportion equation
157,557.68 : 217,431.96 = 85,937.44 : x - Step 2: Convert to fraction form
157,557.68/217,431.96 = 85,937.44/x - Step 3: Cross multiply
157,557.68x = 217,431.96 × 85,937.44 - Step 4: Simplify right side
157,557.68x = 18,685,546,016.58 - Step 5: Solve for x
x = 18,685,546,016.58/157,557.68 - Step 6: Final answer
x = 118,594.96
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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.