Finding the Fourth Proportional to 149,246.75, 205,964.21 and 81,267.45
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Solution
The fourth proportional to 149,246.75, 205,964.21 and 81,267.45 is: 112,151.09
Step by Step Solution
- Step 1: Write the proportion equation
149,246.75 : 205,964.21 = 81,267.45 : x - Step 2: Convert to fraction form
149,246.75/205,964.21 = 81,267.45/x - Step 3: Cross multiply
149,246.75x = 205,964.21 × 81,267.45 - Step 4: Simplify right side
149,246.75x = 16,738,186,137.96 - Step 5: Solve for x
x = 16,738,186,137.96/149,246.75 - Step 6: Final answer
x = 112,151.09
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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.