Finding the Fourth Proportional to 113,523.60, 156,655.68 and 65,768.70
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Solution
The fourth proportional to 113,523.60, 156,655.68 and 65,768.70 is: 90,756.82
Step by Step Solution
- Step 1: Write the proportion equation
113,523.60 : 156,655.68 = 65,768.70 : x - Step 2: Convert to fraction form
113,523.60/156,655.68 = 65,768.70/x - Step 3: Cross multiply
113,523.60x = 156,655.68 × 65,768.70 - Step 4: Simplify right side
113,523.60x = 10,303,040,421.22 - Step 5: Solve for x
x = 10,303,040,421.22/113,523.60 - Step 6: Final answer
x = 90,756.82
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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.