Finding the Fourth Proportional to 75,207.20, 112,810.80 and 66,750.80
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Solution
The fourth proportional to 75,207.20, 112,810.80 and 66,750.80 is: 100,126.20
Step by Step Solution
- Step 1: Write the proportion equation
75,207.20 : 112,810.80 = 66,750.80 : x - Step 2: Convert to fraction form
75,207.20/112,810.80 = 66,750.80/x - Step 3: Cross multiply
75,207.20x = 112,810.80 × 66,750.80 - Step 4: Simplify right side
75,207.20x = 7,530,211,148.64 - Step 5: Solve for x
x = 7,530,211,148.64/75,207.20 - Step 6: Final answer
x = 100,126.20
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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.