Finding the Fourth Proportional to 136,768.21, 188,840.12 and 88,398.76
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Solution
The fourth proportional to 136,768.21, 188,840.12 and 88,398.76 is: 122,054.92
Step by Step Solution
- Step 1: Write the proportion equation
136,768.21 : 188,840.12 = 88,398.76 : x - Step 2: Convert to fraction form
136,768.21/188,840.12 = 88,398.76/x - Step 3: Cross multiply
136,768.21x = 188,840.12 × 88,398.76 - Step 4: Simplify right side
136,768.21x = 16,693,232,446.25 - Step 5: Solve for x
x = 16,693,232,446.25/136,768.21 - Step 6: Final answer
x = 122,054.92
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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.