Finding the Fourth Proportional to 103,221.30, 154,794.15 and 81,077.79
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Solution
The fourth proportional to 103,221.30, 154,794.15 and 81,077.79 is: 121,586.99
Step by Step Solution
- Step 1: Write the proportion equation
103,221.30 : 154,794.15 = 81,077.79 : x - Step 2: Convert to fraction form
103,221.30/154,794.15 = 81,077.79/x - Step 3: Cross multiply
103,221.30x = 154,794.15 × 81,077.79 - Step 4: Simplify right side
103,221.30x = 12,550,367,586.93 - Step 5: Solve for x
x = 12,550,367,586.93/103,221.30 - Step 6: Final answer
x = 121,586.99
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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.