Finding the Fourth Proportional to 128,839.06, 193,264.66 and 106,307.94
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Solution
The fourth proportional to 128,839.06, 193,264.66 and 106,307.94 is: 159,466.92
Step by Step Solution
- Step 1: Write the proportion equation
128,839.06 : 193,264.66 = 106,307.94 : x - Step 2: Convert to fraction form
128,839.06/193,264.66 = 106,307.94/x - Step 3: Cross multiply
128,839.06x = 193,264.66 × 106,307.94 - Step 4: Simplify right side
128,839.06x = 20,545,567,879.40 - Step 5: Solve for x
x = 20,545,567,879.40/128,839.06 - Step 6: Final answer
x = 159,466.92
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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.