Finding the Fourth Proportional to 128,203,151.30, 176,920,505.12 and 69,465,770.09
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Solution
The fourth proportional to 128,203,151.30, 176,920,505.12 and 69,465,770.09 is: 95,862,847.43
Step by Step Solution
- Step 1: Write the proportion equation
128,203,151.30 : 176,920,505.12 = 69,465,770.09 : x - Step 2: Convert to fraction form
128,203,151.30/176,920,505.12 = 69,465,770.09/x - Step 3: Cross multiply
128,203,151.30x = 176,920,505.12 × 69,465,770.09 - Step 4: Simplify right side
128,203,151.30x = 12,289,919,132,161,648 - Step 5: Solve for x
x = 12,289,919,132,161,648/128,203,151.30 - Step 6: Final answer
x = 95,862,847.43
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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.