Finding the Fourth Proportional to 128,135.51, 176,827.01 and 71,546.88
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Solution
The fourth proportional to 128,135.51, 176,827.01 and 71,546.88 is: 98,734.70
Step by Step Solution
- Step 1: Write the proportion equation
128,135.51 : 176,827.01 = 71,546.88 : x - Step 2: Convert to fraction form
128,135.51/176,827.01 = 71,546.88/x - Step 3: Cross multiply
128,135.51x = 176,827.01 × 71,546.88 - Step 4: Simplify right side
128,135.51x = 12,651,420,865.23 - Step 5: Solve for x
x = 12,651,420,865.23/128,135.51 - Step 6: Final answer
x = 98,734.70
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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.