Finding the Fourth Proportional to 160,486.94, 221,702.67 and 128,179.14
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Solution
The fourth proportional to 160,486.94, 221,702.67 and 128,179.14 is: 177,071.46
Step by Step Solution
- Step 1: Write the proportion equation
160,486.94 : 221,702.67 = 128,179.14 : x - Step 2: Convert to fraction form
160,486.94/221,702.67 = 128,179.14/x - Step 3: Cross multiply
160,486.94x = 221,702.67 × 128,179.14 - Step 4: Simplify right side
160,486.94x = 28,417,657,576.30 - Step 5: Solve for x
x = 28,417,657,576.30/160,486.94 - Step 6: Final answer
x = 177,071.46
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1.5x scale
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.