Finding the Fourth Proportional to 131,838.36, 197,669.70 and 68,502.84
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Solution
The fourth proportional to 131,838.36, 197,669.70 and 68,502.84 is: 102,708.62
Step by Step Solution
- Step 1: Write the proportion equation
131,838.36 : 197,669.70 = 68,502.84 : x - Step 2: Convert to fraction form
131,838.36/197,669.70 = 68,502.84/x - Step 3: Cross multiply
131,838.36x = 197,669.70 × 68,502.84 - Step 4: Simplify right side
131,838.36x = 13,540,935,831.95 - Step 5: Solve for x
x = 13,540,935,831.95/131,838.36 - Step 6: Final answer
x = 102,708.62
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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.