Finding the Fourth Proportional to 135,414.24, 186,869.36 and 74,983.59
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Solution
The fourth proportional to 135,414.24, 186,869.36 and 74,983.59 is: 103,476.08
Step by Step Solution
- Step 1: Write the proportion equation
135,414.24 : 186,869.36 = 74,983.59 : x - Step 2: Convert to fraction form
135,414.24/186,869.36 = 74,983.59/x - Step 3: Cross multiply
135,414.24x = 186,869.36 × 74,983.59 - Step 4: Simplify right side
135,414.24x = 14,012,135,098.88 - Step 5: Solve for x
x = 14,012,135,098.88/135,414.24 - Step 6: Final answer
x = 103,476.08
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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.