Finding the Fourth Proportional to 128,662,657.97, 177,555,839.55 and 69,925,326.12
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Solution
The fourth proportional to 128,662,657.97, 177,555,839.55 and 69,925,326.12 is: 96,497,695.46
Step by Step Solution
- Step 1: Write the proportion equation
128,662,657.97 : 177,555,839.55 = 69,925,326.12 : x - Step 2: Convert to fraction form
128,662,657.97/177,555,839.55 = 69,925,326.12/x - Step 3: Cross multiply
128,662,657.97x = 177,555,839.55 × 69,925,326.12 - Step 4: Simplify right side
128,662,657.97x = 12,415,649,985,044,146 - Step 5: Solve for x
x = 12,415,649,985,044,146/128,662,657.97 - Step 6: Final answer
x = 96,497,695.46
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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.