Finding the Fourth Proportional to 121,101,139.20, 181,651,708.80 and 99,577,778.70
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Solution
The fourth proportional to 121,101,139.20, 181,651,708.80 and 99,577,778.70 is: 149,366,668.05
Step by Step Solution
- Step 1: Write the proportion equation
121,101,139.20 : 181,651,708.80 = 99,577,778.70 : x - Step 2: Convert to fraction form
121,101,139.20/181,651,708.80 = 99,577,778.70/x - Step 3: Cross multiply
121,101,139.20x = 181,651,708.80 × 99,577,778.70 - Step 4: Simplify right side
121,101,139.20x = 18,088,473,659,363,244 - Step 5: Solve for x
x = 18,088,473,659,363,244/121,101,139.20 - Step 6: Final answer
x = 149,366,668.05
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.