Finding the Fourth Proportional to 158,872.80, 219,245.76 and 87,253.68
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Solution
The fourth proportional to 158,872.80, 219,245.76 and 87,253.68 is: 120,410.79
Step by Step Solution
- Step 1: Write the proportion equation
158,872.80 : 219,245.76 = 87,253.68 : x - Step 2: Convert to fraction form
158,872.80/219,245.76 = 87,253.68/x - Step 3: Cross multiply
158,872.80x = 219,245.76 × 87,253.68 - Step 4: Simplify right side
158,872.80x = 19,129,999,384.40 - Step 5: Solve for x
x = 19,129,999,384.40/158,872.80 - Step 6: Final answer
x = 120,410.79
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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.