Finding the Fourth Proportional to 157,318.92, 217,102.68 and 85,701.96
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Solution
The fourth proportional to 157,318.92, 217,102.68 and 85,701.96 is: 118,270.11
Step by Step Solution
- Step 1: Write the proportion equation
157,318.92 : 217,102.68 = 85,701.96 : x - Step 2: Convert to fraction form
157,318.92/217,102.68 = 85,701.96/x - Step 3: Cross multiply
157,318.92x = 217,102.68 × 85,701.96 - Step 4: Simplify right side
157,318.92x = 18,606,125,197.25 - Step 5: Solve for x
x = 18,606,125,197.25/157,318.92 - Step 6: Final answer
x = 118,270.11
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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.