Finding the Fourth Proportional to 128,185.68, 176,746.19 and 87,373.97
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Solution
The fourth proportional to 128,185.68, 176,746.19 and 87,373.97 is: 120,473.80
Step by Step Solution
- Step 1: Write the proportion equation
128,185.68 : 176,746.19 = 87,373.97 : x - Step 2: Convert to fraction form
128,185.68/176,746.19 = 87,373.97/x - Step 3: Cross multiply
128,185.68x = 176,746.19 × 87,373.97 - Step 4: Simplify right side
128,185.68x = 15,443,016,302.67 - Step 5: Solve for x
x = 15,443,016,302.67/128,185.68 - Step 6: Final answer
x = 120,473.80
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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.