Finding the Fourth Proportional to 147,790.40, 203,877.67 and 87,331.79
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Solution
The fourth proportional to 147,790.40, 203,877.67 and 87,331.79 is: 120,474.68
Step by Step Solution
- Step 1: Write the proportion equation
147,790.40 : 203,877.67 = 87,331.79 : x - Step 2: Convert to fraction form
147,790.40/203,877.67 = 87,331.79/x - Step 3: Cross multiply
147,790.40x = 203,877.67 × 87,331.79 - Step 4: Simplify right side
147,790.40x = 17,805,001,862.13 - Step 5: Solve for x
x = 17,805,001,862.13/147,790.40 - Step 6: Final answer
x = 120,474.68
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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.