Finding the Fourth Proportional to 87,114.12, 120,160.14 and 69,180.68
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Solution
The fourth proportional to 87,114.12, 120,160.14 and 69,180.68 is: 95,423.80
Step by Step Solution
- Step 1: Write the proportion equation
87,114.12 : 120,160.14 = 69,180.68 : x - Step 2: Convert to fraction form
87,114.12/120,160.14 = 69,180.68/x - Step 3: Cross multiply
87,114.12x = 120,160.14 × 69,180.68 - Step 4: Simplify right side
87,114.12x = 8,312,760,194.10 - Step 5: Solve for x
x = 8,312,760,194.10/87,114.12 - Step 6: Final answer
x = 95,423.80
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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.