Finding the Fourth Proportional to 128,432.40, 192,648.60 and 97,328.40
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Solution
The fourth proportional to 128,432.40, 192,648.60 and 97,328.40 is: 145,992.60
Step by Step Solution
- Step 1: Write the proportion equation
128,432.40 : 192,648.60 = 97,328.40 : x - Step 2: Convert to fraction form
128,432.40/192,648.60 = 97,328.40/x - Step 3: Cross multiply
128,432.40x = 192,648.60 × 97,328.40 - Step 4: Simplify right side
128,432.40x = 18,750,180,000.24 - Step 5: Solve for x
x = 18,750,180,000.24/128,432.40 - Step 6: Final answer
x = 145,992.60
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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.