Finding the Fourth Proportional to 128,682.40, 193,023.60 and 97,578.40
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Solution
The fourth proportional to 128,682.40, 193,023.60 and 97,578.40 is: 146,367.60
Step by Step Solution
- Step 1: Write the proportion equation
128,682.40 : 193,023.60 = 97,578.40 : x - Step 2: Convert to fraction form
128,682.40/193,023.60 = 97,578.40/x - Step 3: Cross multiply
128,682.40x = 193,023.60 × 97,578.40 - Step 4: Simplify right side
128,682.40x = 18,834,934,050.24 - Step 5: Solve for x
x = 18,834,934,050.24/128,682.40 - Step 6: Final answer
x = 146,367.60
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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.