Finding the Fourth Proportional to 135,439.40, 186,813.87 and 92,924.12
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Solution
The fourth proportional to 135,439.40, 186,813.87 and 92,924.12 is: 128,171.82
Step by Step Solution
- Step 1: Write the proportion equation
135,439.40 : 186,813.87 = 92,924.12 : x - Step 2: Convert to fraction form
135,439.40/186,813.87 = 92,924.12/x - Step 3: Cross multiply
135,439.40x = 186,813.87 × 92,924.12 - Step 4: Simplify right side
135,439.40x = 17,359,514,473.54 - Step 5: Solve for x
x = 17,359,514,473.54/135,439.40 - Step 6: Final answer
x = 128,171.82
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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.