Finding the Fourth Proportional to 157,394.18, 217,197.62 and 85,772.66
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Solution
The fourth proportional to 157,394.18, 217,197.62 and 85,772.66 is: 118,362.81
Step by Step Solution
- Step 1: Write the proportion equation
157,394.18 : 217,197.62 = 85,772.66 : x - Step 2: Convert to fraction form
157,394.18/217,197.62 = 85,772.66/x - Step 3: Cross multiply
157,394.18x = 217,197.62 × 85,772.66 - Step 4: Simplify right side
157,394.18x = 18,629,616,098.22 - Step 5: Solve for x
x = 18,629,616,098.22/157,394.18 - Step 6: Final answer
x = 118,362.81
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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.