Finding the Fourth Proportional to 99,793.20, 149,689.80 and 71,653.80
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Solution
The fourth proportional to 99,793.20, 149,689.80 and 71,653.80 is: 107,480.70
Step by Step Solution
- Step 1: Write the proportion equation
99,793.20 : 149,689.80 = 71,653.80 : x - Step 2: Convert to fraction form
99,793.20/149,689.80 = 71,653.80/x - Step 3: Cross multiply
99,793.20x = 149,689.80 × 71,653.80 - Step 4: Simplify right side
99,793.20x = 10,725,842,991.24 - Step 5: Solve for x
x = 10,725,842,991.24/99,793.20 - Step 6: Final answer
x = 107,480.70
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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.