Finding the Fourth Proportional to 145,708.45, 201,083.84 and 81,177.63
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Solution
The fourth proportional to 145,708.45, 201,083.84 and 81,177.63 is: 112,028.57
Step by Step Solution
- Step 1: Write the proportion equation
145,708.45 : 201,083.84 = 81,177.63 : x - Step 2: Convert to fraction form
145,708.45/201,083.84 = 81,177.63/x - Step 3: Cross multiply
145,708.45x = 201,083.84 × 81,177.63 - Step 4: Simplify right side
145,708.45x = 16,323,508,706.96 - Step 5: Solve for x
x = 16,323,508,706.96/145,708.45 - Step 6: Final answer
x = 112,028.57
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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.