Finding the Fourth Proportional to 174,646.20, 261,969.30 and 145,121.70
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Solution
The fourth proportional to 174,646.20, 261,969.30 and 145,121.70 is: 217,682.55
Step by Step Solution
- Step 1: Write the proportion equation
174,646.20 : 261,969.30 = 145,121.70 : x - Step 2: Convert to fraction form
174,646.20/261,969.30 = 145,121.70/x - Step 3: Cross multiply
174,646.20x = 261,969.30 × 145,121.70 - Step 4: Simplify right side
174,646.20x = 38,017,430,163.81 - Step 5: Solve for x
x = 38,017,430,163.81/174,646.20 - Step 6: Final answer
x = 217,682.55
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1.5x scale
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.