Finding the Fourth Proportional to 136,909.40, 205,371.44 and 43,422.44
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Solution
The fourth proportional to 136,909.40, 205,371.44 and 43,422.44 is: 65,135.99
Step by Step Solution
- Step 1: Write the proportion equation
136,909.40 : 205,371.44 = 43,422.44 : x - Step 2: Convert to fraction form
136,909.40/205,371.44 = 43,422.44/x - Step 3: Cross multiply
136,909.40x = 205,371.44 × 43,422.44 - Step 4: Simplify right side
136,909.40x = 8,917,729,031.11 - Step 5: Solve for x
x = 8,917,729,031.11/136,909.40 - Step 6: Final answer
x = 65,135.99
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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.