Finding the Fourth Proportional to 128,285.88, 192,433.14 and 34,793.88
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Solution
The fourth proportional to 128,285.88, 192,433.14 and 34,793.88 is: 52,191.99
Step by Step Solution
- Step 1: Write the proportion equation
128,285.88 : 192,433.14 = 34,793.88 : x - Step 2: Convert to fraction form
128,285.88/192,433.14 = 34,793.88/x - Step 3: Cross multiply
128,285.88x = 192,433.14 × 34,793.88 - Step 4: Simplify right side
128,285.88x = 6,695,495,581.18 - Step 5: Solve for x
x = 6,695,495,581.18/128,285.88 - Step 6: Final answer
x = 52,191.99
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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.