Finding the Fourth Proportional to 84,129.29, 125,701.28 and 81,186.07
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Solution
The fourth proportional to 84,129.29, 125,701.28 and 81,186.07 is: 121,303.69
Step by Step Solution
- Step 1: Write the proportion equation
84,129.29 : 125,701.28 = 81,186.07 : x - Step 2: Convert to fraction form
84,129.29/125,701.28 = 81,186.07/x - Step 3: Cross multiply
84,129.29x = 125,701.28 × 81,186.07 - Step 4: Simplify right side
84,129.29x = 10,205,192,917.17 - Step 5: Solve for x
x = 10,205,192,917.17/84,129.29 - Step 6: Final answer
x = 121,303.69
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.