Finding the Fourth Proportional to 115,975.57, 160,031.34 and 68,211.49
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Solution
The fourth proportional to 115,975.57, 160,031.34 and 68,211.49 is: 94,123.07
Step by Step Solution
- Step 1: Write the proportion equation
115,975.57 : 160,031.34 = 68,211.49 : x - Step 2: Convert to fraction form
115,975.57/160,031.34 = 68,211.49/x - Step 3: Cross multiply
115,975.57x = 160,031.34 × 68,211.49 - Step 4: Simplify right side
115,975.57x = 10,915,976,148.10 - Step 5: Solve for x
x = 10,915,976,148.10/115,975.57 - Step 6: Final answer
x = 94,123.07
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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.