Finding the Fourth Proportional to 187,329.42, 280,920.17 and 74,988.70
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Solution
The fourth proportional to 187,329.42, 280,920.17 and 74,988.70 is: 112,453.44
Step by Step Solution
- Step 1: Write the proportion equation
187,329.42 : 280,920.17 = 74,988.70 : x - Step 2: Convert to fraction form
187,329.42/280,920.17 = 74,988.70/x - Step 3: Cross multiply
187,329.42x = 280,920.17 × 74,988.70 - Step 4: Simplify right side
187,329.42x = 21,065,837,415.44 - Step 5: Solve for x
x = 21,065,837,415.44/187,329.42 - Step 6: Final answer
x = 112,453.44
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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.