Finding the Fourth Proportional to 135,408.99, 186,866.37 and 74,979.51
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Solution
The fourth proportional to 135,408.99, 186,866.37 and 74,979.51 is: 103,472.81
Step by Step Solution
- Step 1: Write the proportion equation
135,408.99 : 186,866.37 = 74,979.51 : x - Step 2: Convert to fraction form
135,408.99/186,866.37 = 74,979.51/x - Step 3: Cross multiply
135,408.99x = 186,866.37 × 74,979.51 - Step 4: Simplify right side
135,408.99x = 14,011,148,858.08 - Step 5: Solve for x
x = 14,011,148,858.08/135,408.99 - Step 6: Final answer
x = 103,472.81
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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.