Finding the Fourth Proportional to 140,122.40, 193,367.28 and 76,461.26
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Solution
The fourth proportional to 140,122.40, 193,367.28 and 76,461.26 is: 105,515.65
Step by Step Solution
- Step 1: Write the proportion equation
140,122.40 : 193,367.28 = 76,461.26 : x - Step 2: Convert to fraction form
140,122.40/193,367.28 = 76,461.26/x - Step 3: Cross multiply
140,122.40x = 193,367.28 × 76,461.26 - Step 4: Simplify right side
140,122.40x = 14,785,105,871.57 - Step 5: Solve for x
x = 14,785,105,871.57/140,122.40 - Step 6: Final answer
x = 105,515.65
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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.