Finding the Third Proportional to 84,156.79 and 129,349.09
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Solution
The third proportional to 84,156.79 and 129,349.09 is: 198,809.72
Step by Step Solution
- Step 1: Write the proportion equation
84,156.79 : 129,349.09 = 129,349.09 : x - Step 2: Convert to fraction form
84,156.79/129,349.09 = 129,349.09/x - Step 3: Cross multiply
84,156.79x = 129,349.09 × 129,349.09 - Step 4: Simplify right side
84,156.79x = 16,731,187,043.41 - Step 5: Solve for x
x = 16,731,187,043.41/84,156.79 - Step 6: Final answer
x = 198,809.72
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Why These Related Problems?
These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.