Finding the Fourth Proportional to 128,199,140.42, 176,914,880.30 and 69,461,851.69
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Solution
The fourth proportional to 128,199,140.42, 176,914,880.30 and 69,461,851.69 is: 95,857,391.37
Step by Step Solution
- Step 1: Write the proportion equation
128,199,140.42 : 176,914,880.30 = 69,461,851.69 : x - Step 2: Convert to fraction form
128,199,140.42/176,914,880.30 = 69,461,851.69/x - Step 3: Cross multiply
128,199,140.42x = 176,914,880.30 × 69,461,851.69 - Step 4: Simplify right side
128,199,140.42x = 12,288,835,175,920,818 - Step 5: Solve for x
x = 12,288,835,175,920,818/128,199,140.42 - Step 6: Final answer
x = 95,857,391.37
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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.