Finding the Fourth Proportional to 128,110.25, 192,281.99 and 68,189.03
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Solution
The fourth proportional to 128,110.25, 192,281.99 and 68,189.03 is: 102,345.62
Step by Step Solution
- Step 1: Write the proportion equation
128,110.25 : 192,281.99 = 68,189.03 : x - Step 2: Convert to fraction form
128,110.25/192,281.99 = 68,189.03/x - Step 3: Cross multiply
128,110.25x = 192,281.99 × 68,189.03 - Step 4: Simplify right side
128,110.25x = 13,111,522,384.57 - Step 5: Solve for x
x = 13,111,522,384.57/128,110.25 - Step 6: Final answer
x = 102,345.62
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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.