Finding the Fourth Proportional to 128,535.81, 177,354.66 and 83,207.49
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Solution
The fourth proportional to 128,535.81, 177,354.66 and 83,207.49 is: 114,810.31
Step by Step Solution
- Step 1: Write the proportion equation
128,535.81 : 177,354.66 = 83,207.49 : x - Step 2: Convert to fraction form
128,535.81/177,354.66 = 83,207.49/x - Step 3: Cross multiply
128,535.81x = 177,354.66 × 83,207.49 - Step 4: Simplify right side
128,535.81x = 14,757,236,098.40 - Step 5: Solve for x
x = 14,757,236,098.40/128,535.81 - Step 6: Final answer
x = 114,810.31
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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.