Finding the Fourth Proportional to 137,171.76, 206,102.70 and 87,274.14
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Solution
The fourth proportional to 137,171.76, 206,102.70 and 87,274.14 is: 131,130.75
Step by Step Solution
- Step 1: Write the proportion equation
137,171.76 : 206,102.70 = 87,274.14 : x - Step 2: Convert to fraction form
137,171.76/206,102.70 = 87,274.14/x - Step 3: Cross multiply
137,171.76x = 206,102.70 × 87,274.14 - Step 4: Simplify right side
137,171.76x = 17,987,435,894.18 - Step 5: Solve for x
x = 17,987,435,894.18/137,171.76 - Step 6: Final answer
x = 131,130.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.