Finding the Fourth Proportional to 209,913.99, 314,872.40 and 76,739.46
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Solution
The fourth proportional to 209,913.99, 314,872.40 and 76,739.46 is: 115,109.70
Step by Step Solution
- Step 1: Write the proportion equation
209,913.99 : 314,872.40 = 76,739.46 : x - Step 2: Convert to fraction form
209,913.99/314,872.40 = 76,739.46/x - Step 3: Cross multiply
209,913.99x = 314,872.40 × 76,739.46 - Step 4: Simplify right side
209,913.99x = 24,163,135,986.84 - Step 5: Solve for x
x = 24,163,135,986.84/209,913.99 - Step 6: Final answer
x = 115,109.70
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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.