Finding the Fourth Proportional to 140,406.21, 193,757.70 and 76,744.46
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Solution
The fourth proportional to 140,406.21, 193,757.70 and 76,744.46 is: 105,905.79
Step by Step Solution
- Step 1: Write the proportion equation
140,406.21 : 193,757.70 = 76,744.46 : x - Step 2: Convert to fraction form
140,406.21/193,757.70 = 76,744.46/x - Step 3: Cross multiply
140,406.21x = 193,757.70 × 76,744.46 - Step 4: Simplify right side
140,406.21x = 14,869,830,829.53 - Step 5: Solve for x
x = 14,869,830,829.53/140,406.21 - Step 6: Final answer
x = 105,905.79
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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.