Finding the Fourth Proportional to 149,186.30, 205,881.46 and 81,207.70
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Solution
The fourth proportional to 149,186.30, 205,881.46 and 81,207.70 is: 112,069.01
Step by Step Solution
- Step 1: Write the proportion equation
149,186.30 : 205,881.46 = 81,207.70 : x - Step 2: Convert to fraction form
149,186.30/205,881.46 = 81,207.70/x - Step 3: Cross multiply
149,186.30x = 205,881.46 × 81,207.70 - Step 4: Simplify right side
149,186.30x = 16,719,160,736.40 - Step 5: Solve for x
x = 16,719,160,736.40/149,186.30 - Step 6: Final answer
x = 112,069.01
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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.