Finding the Fourth Proportional to 135,305.76, 186,718.14 and 74,878.92
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Solution
The fourth proportional to 135,305.76, 186,718.14 and 74,878.92 is: 103,330.80
Step by Step Solution
- Step 1: Write the proportion equation
135,305.76 : 186,718.14 = 74,878.92 : x - Step 2: Convert to fraction form
135,305.76/186,718.14 = 74,878.92/x - Step 3: Cross multiply
135,305.76x = 186,718.14 × 74,878.92 - Step 4: Simplify right side
135,305.76x = 13,981,252,667.61 - Step 5: Solve for x
x = 13,981,252,667.61/135,305.76 - Step 6: Final answer
x = 103,330.80
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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.