Finding the Fourth Proportional to 141,862.19, 195,771.33 and 78,202.26
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Solution
The fourth proportional to 141,862.19, 195,771.33 and 78,202.26 is: 107,919.95
Step by Step Solution
- Step 1: Write the proportion equation
141,862.19 : 195,771.33 = 78,202.26 : x - Step 2: Convert to fraction form
141,862.19/195,771.33 = 78,202.26/x - Step 3: Cross multiply
141,862.19x = 195,771.33 × 78,202.26 - Step 4: Simplify right side
141,862.19x = 15,309,760,449.21 - Step 5: Solve for x
x = 15,309,760,449.21/141,862.19 - Step 6: Final answer
x = 107,919.95
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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.