Finding the Fourth Proportional to 157,812.96, 217,778.50 and 86,193.26
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Solution
The fourth proportional to 157,812.96, 217,778.50 and 86,193.26 is: 118,944.85
Step by Step Solution
- Step 1: Write the proportion equation
157,812.96 : 217,778.50 = 86,193.26 : x - Step 2: Convert to fraction form
157,812.96/217,778.50 = 86,193.26/x - Step 3: Cross multiply
157,812.96x = 217,778.50 × 86,193.26 - Step 4: Simplify right side
157,812.96x = 18,771,038,872.91 - Step 5: Solve for x
x = 18,771,038,872.91/157,812.96 - Step 6: Final answer
x = 118,944.85
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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.