Finding the Fourth Proportional to 128,272.80, 192,409.20 and 114,494.70
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Solution
The fourth proportional to 128,272.80, 192,409.20 and 114,494.70 is: 171,742.05
Step by Step Solution
- Step 1: Write the proportion equation
128,272.80 : 192,409.20 = 114,494.70 : x - Step 2: Convert to fraction form
128,272.80/192,409.20 = 114,494.70/x - Step 3: Cross multiply
128,272.80x = 192,409.20 × 114,494.70 - Step 4: Simplify right side
128,272.80x = 22,029,833,631.24 - Step 5: Solve for x
x = 22,029,833,631.24/128,272.80 - Step 6: Final answer
x = 171,742.05
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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.