Finding the Fourth Proportional to 140,121.76, 193,372.69 and 76,463.05
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Solution
The fourth proportional to 140,121.76, 193,372.69 and 76,463.05 is: 105,521.55
Step by Step Solution
- Step 1: Write the proportion equation
140,121.76 : 193,372.69 = 76,463.05 : x - Step 2: Convert to fraction form
140,121.76/193,372.69 = 76,463.05/x - Step 3: Cross multiply
140,121.76x = 193,372.69 × 76,463.05 - Step 4: Simplify right side
140,121.76x = 14,785,864,697.24 - Step 5: Solve for x
x = 14,785,864,697.24/140,121.76 - Step 6: Final answer
x = 105,521.55
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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.