Finding the Fourth Proportional to 145,830.06, 218,745.09 and 75,561.75
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Solution
The fourth proportional to 145,830.06, 218,745.09 and 75,561.75 is: 113,342.63
Step by Step Solution
- Step 1: Write the proportion equation
145,830.06 : 218,745.09 = 75,561.75 : x - Step 2: Convert to fraction form
145,830.06/218,745.09 = 75,561.75/x - Step 3: Cross multiply
145,830.06x = 218,745.09 × 75,561.75 - Step 4: Simplify right side
145,830.06x = 16,528,761,804.31 - Step 5: Solve for x
x = 16,528,761,804.31/145,830.06 - Step 6: Final answer
x = 113,342.63
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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.