Finding the Fourth Proportional to 135,007.44, 186,272.84 and 77,643.64
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Solution
The fourth proportional to 135,007.44, 186,272.84 and 77,643.64 is: 107,126.70
Step by Step Solution
- Step 1: Write the proportion equation
135,007.44 : 186,272.84 = 77,643.64 : x - Step 2: Convert to fraction form
135,007.44/186,272.84 = 77,643.64/x - Step 3: Cross multiply
135,007.44x = 186,272.84 × 77,643.64 - Step 4: Simplify right side
135,007.44x = 14,462,901,330.74 - Step 5: Solve for x
x = 14,462,901,330.74/135,007.44 - Step 6: Final answer
x = 107,126.70
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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.