Finding the Fourth Proportional to 128,060.27, 176,782.97 and 74,334.95
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Solution
The fourth proportional to 128,060.27, 176,782.97 and 74,334.95 is: 102,616.94
Step by Step Solution
- Step 1: Write the proportion equation
128,060.27 : 176,782.97 = 74,334.95 : x - Step 2: Convert to fraction form
128,060.27/176,782.97 = 74,334.95/x - Step 3: Cross multiply
128,060.27x = 176,782.97 × 74,334.95 - Step 4: Simplify right side
128,060.27x = 13,141,153,200.66 - Step 5: Solve for x
x = 13,141,153,200.66/128,060.27 - Step 6: Final answer
x = 102,616.94
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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.