Finding the Fourth Proportional to 128,199,146.67, 176,914,888.92 and 69,461,857.94
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Solution
The fourth proportional to 128,199,146.67, 176,914,888.92 and 69,461,857.94 is: 95,857,399.99
Step by Step Solution
- Step 1: Write the proportion equation
128,199,146.67 : 176,914,888.92 = 69,461,857.94 : x - Step 2: Convert to fraction form
128,199,146.67/176,914,888.92 = 69,461,857.94/x - Step 3: Cross multiply
128,199,146.67x = 176,914,888.92 × 69,461,857.94 - Step 4: Simplify right side
128,199,146.67x = 12,288,836,880,747,346 - Step 5: Solve for x
x = 12,288,836,880,747,346/128,199,146.67 - Step 6: Final answer
x = 95,857,399.99
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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.