Finding the Third Proportional to 81,658.13 and 128,319.75
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Solution
The third proportional to 81,658.13 and 128,319.75 is: 201,645.07
Step by Step Solution
- Step 1: Write the proportion equation
81,658.13 : 128,319.75 = 128,319.75 : x - Step 2: Convert to fraction form
81,658.13/128,319.75 = 128,319.75/x - Step 3: Cross multiply
81,658.13x = 128,319.75 × 128,319.75 - Step 4: Simplify right side
81,658.13x = 16,465,958,240.06 - Step 5: Solve for x
x = 16,465,958,240.06/81,658.13 - Step 6: Final answer
x = 201,645.07
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These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.