Finding the Fourth Proportional to 128,582.47, 177,446.69 and 73,390.70
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Solution
The fourth proportional to 128,582.47, 177,446.69 and 73,390.70 is: 101,280.80
Step by Step Solution
- Step 1: Write the proportion equation
128,582.47 : 177,446.69 = 73,390.70 : x - Step 2: Convert to fraction form
128,582.47/177,446.69 = 73,390.70/x - Step 3: Cross multiply
128,582.47x = 177,446.69 × 73,390.70 - Step 4: Simplify right side
128,582.47x = 13,022,936,145.52 - Step 5: Solve for x
x = 13,022,936,145.52/128,582.47 - Step 6: Final answer
x = 101,280.80
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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.