Finding the Fourth Proportional to 157,589.10, 217,474.02 and 85,969.62
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Solution
The fourth proportional to 157,589.10, 217,474.02 and 85,969.62 is: 118,638.65
Step by Step Solution
- Step 1: Write the proportion equation
157,589.10 : 217,474.02 = 85,969.62 : x - Step 2: Convert to fraction form
157,589.10/217,474.02 = 85,969.62/x - Step 3: Cross multiply
157,589.10x = 217,474.02 × 85,969.62 - Step 4: Simplify right side
157,589.10x = 18,696,158,859.27 - Step 5: Solve for x
x = 18,696,158,859.27/157,589.10 - Step 6: Final answer
x = 118,638.65
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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.