Finding the Fourth Proportional to 145,718.29, 201,064.58 and 81,185.90
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Solution
The fourth proportional to 145,718.29, 201,064.58 and 81,185.90 is: 112,021.68
Step by Step Solution
- Step 1: Write the proportion equation
145,718.29 : 201,064.58 = 81,185.90 : x - Step 2: Convert to fraction form
145,718.29/201,064.58 = 81,185.90/x - Step 3: Cross multiply
145,718.29x = 201,064.58 × 81,185.90 - Step 4: Simplify right side
145,718.29x = 16,323,607,778.62 - Step 5: Solve for x
x = 16,323,607,778.62/145,718.29 - Step 6: Final answer
x = 112,021.68
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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.