Finding the Fourth Proportional to 115,234.25, 158,931.11 and 79,416.05
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Solution
The fourth proportional to 115,234.25, 158,931.11 and 79,416.05 is: 109,530.64
Step by Step Solution
- Step 1: Write the proportion equation
115,234.25 : 158,931.11 = 79,416.05 : x - Step 2: Convert to fraction form
115,234.25/158,931.11 = 79,416.05/x - Step 3: Cross multiply
115,234.25x = 158,931.11 × 79,416.05 - Step 4: Simplify right side
115,234.25x = 12,621,680,382.20 - Step 5: Solve for x
x = 12,621,680,382.20/115,234.25 - Step 6: Final answer
x = 109,530.64
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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.