Finding the Fourth Proportional to 128,332.25, 177,099.62 and 71,743.62
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Solution
The fourth proportional to 128,332.25, 177,099.62 and 71,743.62 is: 99,006.82
Step by Step Solution
- Step 1: Write the proportion equation
128,332.25 : 177,099.62 = 71,743.62 : x - Step 2: Convert to fraction form
128,332.25/177,099.62 = 71,743.62/x - Step 3: Cross multiply
128,332.25x = 177,099.62 × 71,743.62 - Step 4: Simplify right side
128,332.25x = 12,705,768,144.83 - Step 5: Solve for x
x = 12,705,768,144.83/128,332.25 - Step 6: Final answer
x = 99,006.82
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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.