Finding the Fourth Proportional to 128,988.52, 193,432.96 and 50,092.09
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Solution
The fourth proportional to 128,988.52, 193,432.96 and 50,092.09 is: 75,118.79
Step by Step Solution
- Step 1: Write the proportion equation
128,988.52 : 193,432.96 = 50,092.09 : x - Step 2: Convert to fraction form
128,988.52/193,432.96 = 50,092.09/x - Step 3: Cross multiply
128,988.52x = 193,432.96 × 50,092.09 - Step 4: Simplify right side
128,988.52x = 9,689,461,241.29 - Step 5: Solve for x
x = 9,689,461,241.29/128,988.52 - Step 6: Final answer
x = 75,118.79
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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.