Finding the Fourth Proportional to 128,822.90, 193,234.35 and 97,718.90
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Solution
The fourth proportional to 128,822.90, 193,234.35 and 97,718.90 is: 146,578.35
Step by Step Solution
- Step 1: Write the proportion equation
128,822.90 : 193,234.35 = 97,718.90 : x - Step 2: Convert to fraction form
128,822.90/193,234.35 = 97,718.90/x - Step 3: Cross multiply
128,822.90x = 193,234.35 × 97,718.90 - Step 4: Simplify right side
128,822.90x = 18,882,648,124.22 - Step 5: Solve for x
x = 18,882,648,124.22/128,822.90 - Step 6: Final answer
x = 146,578.35
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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.