Finding the Fourth Proportional to 121,720.20, 182,580.30 and 92,195.70
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Solution
The fourth proportional to 121,720.20, 182,580.30 and 92,195.70 is: 138,293.55
Step by Step Solution
- Step 1: Write the proportion equation
121,720.20 : 182,580.30 = 92,195.70 : x - Step 2: Convert to fraction form
121,720.20/182,580.30 = 92,195.70/x - Step 3: Cross multiply
121,720.20x = 182,580.30 × 92,195.70 - Step 4: Simplify right side
121,720.20x = 16,833,118,564.71 - Step 5: Solve for x
x = 16,833,118,564.71/121,720.20 - Step 6: Final answer
x = 138,293.55
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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.