Finding the Fourth Proportional to 128,420.65, 192,583.08 and 44,156.98
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Solution
The fourth proportional to 128,420.65, 192,583.08 and 44,156.98 is: 66,219.00
Step by Step Solution
- Step 1: Write the proportion equation
128,420.65 : 192,583.08 = 44,156.98 : x - Step 2: Convert to fraction form
128,420.65/192,583.08 = 44,156.98/x - Step 3: Cross multiply
128,420.65x = 192,583.08 × 44,156.98 - Step 4: Simplify right side
128,420.65x = 8,503,887,211.90 - Step 5: Solve for x
x = 8,503,887,211.90/128,420.65 - Step 6: Final answer
x = 66,219.00
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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.