Finding the Fourth Proportional to 80,201.70, 120,302.55 and 67,079.70
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Solution
The fourth proportional to 80,201.70, 120,302.55 and 67,079.70 is: 100,619.55
Step by Step Solution
- Step 1: Write the proportion equation
80,201.70 : 120,302.55 = 67,079.70 : x - Step 2: Convert to fraction form
80,201.70/120,302.55 = 67,079.70/x - Step 3: Cross multiply
80,201.70x = 120,302.55 × 67,079.70 - Step 4: Simplify right side
80,201.70x = 8,069,858,963.24 - Step 5: Solve for x
x = 8,069,858,963.24/80,201.70 - Step 6: Final answer
x = 100,619.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.