Finding the Fourth Proportional to 138,755.24, 191,482.84 and 75,093.06
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Solution
The fourth proportional to 138,755.24, 191,482.84 and 75,093.06 is: 103,628.75
Step by Step Solution
- Step 1: Write the proportion equation
138,755.24 : 191,482.84 = 75,093.06 : x - Step 2: Convert to fraction form
138,755.24/191,482.84 = 75,093.06/x - Step 3: Cross multiply
138,755.24x = 191,482.84 × 75,093.06 - Step 4: Simplify right side
138,755.24x = 14,379,032,393.09 - Step 5: Solve for x
x = 14,379,032,393.09/138,755.24 - Step 6: Final answer
x = 103,628.75
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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.