Finding the Fourth Proportional to 112,290.60, 155,011.68 and 74,072.88
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Solution
The fourth proportional to 112,290.60, 155,011.68 and 74,072.88 is: 102,253.99
Step by Step Solution
- Step 1: Write the proportion equation
112,290.60 : 155,011.68 = 74,072.88 : x - Step 2: Convert to fraction form
112,290.60/155,011.68 = 74,072.88/x - Step 3: Cross multiply
112,290.60x = 155,011.68 × 74,072.88 - Step 4: Simplify right side
112,290.60x = 11,482,161,571.24 - Step 5: Solve for x
x = 11,482,161,571.24/112,290.60 - Step 6: Final answer
x = 102,253.99
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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.