Finding the Fourth Proportional to 163,628.36, 245,415.20 and 45,311.68
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Solution
The fourth proportional to 163,628.36, 245,415.20 and 45,311.68 is: 67,959.95
Step by Step Solution
- Step 1: Write the proportion equation
163,628.36 : 245,415.20 = 45,311.68 : x - Step 2: Convert to fraction form
163,628.36/245,415.20 = 45,311.68/x - Step 3: Cross multiply
163,628.36x = 245,415.20 × 45,311.68 - Step 4: Simplify right side
163,628.36x = 11,120,175,009.54 - Step 5: Solve for x
x = 11,120,175,009.54/163,628.36 - Step 6: Final answer
x = 67,959.95
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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.