Finding the Fourth Proportional to 131,831.36, 197,659.20 and 68,495.84
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Solution
The fourth proportional to 131,831.36, 197,659.20 and 68,495.84 is: 102,698.12
Step by Step Solution
- Step 1: Write the proportion equation
131,831.36 : 197,659.20 = 68,495.84 : x - Step 2: Convert to fraction form
131,831.36/197,659.20 = 68,495.84/x - Step 3: Cross multiply
131,831.36x = 197,659.20 × 68,495.84 - Step 4: Simplify right side
131,831.36x = 13,538,832,937.73 - Step 5: Solve for x
x = 13,538,832,937.73/131,831.36 - Step 6: Final answer
x = 102,698.12
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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.