Finding the Fourth Proportional to 113,375.84, 170,139.90 and 78,252.62
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Solution
The fourth proportional to 113,375.84, 170,139.90 and 78,252.62 is: 117,431.48
Step by Step Solution
- Step 1: Write the proportion equation
113,375.84 : 170,139.90 = 78,252.62 : x - Step 2: Convert to fraction form
113,375.84/170,139.90 = 78,252.62/x - Step 3: Cross multiply
113,375.84x = 170,139.90 × 78,252.62 - Step 4: Simplify right side
113,375.84x = 13,313,892,941.54 - Step 5: Solve for x
x = 13,313,892,941.54/113,375.84 - Step 6: Final answer
x = 117,431.48
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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.