Finding the Fourth Proportional to 122,961.28, 169,675.52 and 68,509.28
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Solution
The fourth proportional to 122,961.28, 169,675.52 and 68,509.28 is: 94,536.65
Step by Step Solution
- Step 1: Write the proportion equation
122,961.28 : 169,675.52 = 68,509.28 : x - Step 2: Convert to fraction form
122,961.28/169,675.52 = 68,509.28/x - Step 3: Cross multiply
122,961.28x = 169,675.52 × 68,509.28 - Step 4: Simplify right side
122,961.28x = 11,624,347,708.83 - Step 5: Solve for x
x = 11,624,347,708.83/122,961.28 - Step 6: Final answer
x = 94,536.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.