Finding the Fourth Proportional to 136,554.80, 188,449.08 and 76,135.28
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Solution
The fourth proportional to 136,554.80, 188,449.08 and 76,135.28 is: 105,068.61
Step by Step Solution
- Step 1: Write the proportion equation
136,554.80 : 188,449.08 = 76,135.28 : x - Step 2: Convert to fraction form
136,554.80/188,449.08 = 76,135.28/x - Step 3: Cross multiply
136,554.80x = 188,449.08 × 76,135.28 - Step 4: Simplify right side
136,554.80x = 14,347,623,471.54 - Step 5: Solve for x
x = 14,347,623,471.54/136,554.80 - Step 6: Final answer
x = 105,068.61
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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.