Finding the Fourth Proportional to 163,311.20, 225,394.08 and 99,685.88
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Solution
The fourth proportional to 163,311.20, 225,394.08 and 99,685.88 is: 137,581.54
Step by Step Solution
- Step 1: Write the proportion equation
163,311.20 : 225,394.08 = 99,685.88 : x - Step 2: Convert to fraction form
163,311.20/225,394.08 = 99,685.88/x - Step 3: Cross multiply
163,311.20x = 225,394.08 × 99,685.88 - Step 4: Simplify right side
163,311.20x = 22,468,607,211.59 - Step 5: Solve for x
x = 22,468,607,211.59/163,311.20 - Step 6: Final answer
x = 137,581.54
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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.