Finding the Fourth Proportional to 149,731.88, 206,628.56 and 81,748.26
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Solution
The fourth proportional to 149,731.88, 206,628.56 and 81,748.26 is: 112,811.82
Step by Step Solution
- Step 1: Write the proportion equation
149,731.88 : 206,628.56 = 81,748.26 : x - Step 2: Convert to fraction form
149,731.88/206,628.56 = 81,748.26/x - Step 3: Cross multiply
149,731.88x = 206,628.56 × 81,748.26 - Step 4: Simplify right side
149,731.88x = 16,891,525,246.31 - Step 5: Solve for x
x = 16,891,525,246.31/149,731.88 - Step 6: Final answer
x = 112,811.82
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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.