Finding the Fourth Proportional to 136,643.80, 204,965.70 and 113,315.80
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Solution
The fourth proportional to 136,643.80, 204,965.70 and 113,315.80 is: 169,973.70
Step by Step Solution
- Step 1: Write the proportion equation
136,643.80 : 204,965.70 = 113,315.80 : x - Step 2: Convert to fraction form
136,643.80/204,965.70 = 113,315.80/x - Step 3: Cross multiply
136,643.80x = 204,965.70 × 113,315.80 - Step 4: Simplify right side
136,643.80x = 23,225,852,268.06 - Step 5: Solve for x
x = 23,225,852,268.06/136,643.80 - Step 6: Final answer
x = 169,973.70
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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.