Finding the Fourth Proportional to 135,409.77, 186,886.58 and 77,266.62
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Solution
The fourth proportional to 135,409.77, 186,886.58 and 77,266.62 is: 106,639.97
Step by Step Solution
- Step 1: Write the proportion equation
135,409.77 : 186,886.58 = 77,266.62 : x - Step 2: Convert to fraction form
135,409.77/186,886.58 = 77,266.62/x - Step 3: Cross multiply
135,409.77x = 186,886.58 × 77,266.62 - Step 4: Simplify right side
135,409.77x = 14,440,093,973.63 - Step 5: Solve for x
x = 14,440,093,973.63/135,409.77 - Step 6: Final answer
x = 106,639.97
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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.