Finding the Fourth Proportional to 145,643.19, 218,489.70 and 66,764.19
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Solution
The fourth proportional to 145,643.19, 218,489.70 and 66,764.19 is: 100,157.71
Step by Step Solution
- Step 1: Write the proportion equation
145,643.19 : 218,489.70 = 66,764.19 : x - Step 2: Convert to fraction form
145,643.19/218,489.70 = 66,764.19/x - Step 3: Cross multiply
145,643.19x = 218,489.70 × 66,764.19 - Step 4: Simplify right side
145,643.19x = 14,587,287,843.84 - Step 5: Solve for x
x = 14,587,287,843.84/145,643.19 - Step 6: Final answer
x = 100,157.71
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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.