Finding the Fourth Proportional to 99,723.60, 149,366.70 and 88,642.80
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Solution
The fourth proportional to 99,723.60, 149,366.70 and 88,642.80 is: 132,769.80
Step by Step Solution
- Step 1: Write the proportion equation
99,723.60 : 149,366.70 = 88,642.80 : x - Step 2: Convert to fraction form
99,723.60/149,366.70 = 88,642.80/x - Step 3: Cross multiply
99,723.60x = 149,366.70 × 88,642.80 - Step 4: Simplify right side
99,723.60x = 13,240,282,514.76 - Step 5: Solve for x
x = 13,240,282,514.76/99,723.60 - Step 6: Final answer
x = 132,769.80
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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.