Finding the Fourth Proportional to 133,059,348.10, 199,589,022.15 and 81,999,021.70
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Solution
The fourth proportional to 133,059,348.10, 199,589,022.15 and 81,999,021.70 is: 122,998,532.55
Step by Step Solution
- Step 1: Write the proportion equation
133,059,348.10 : 199,589,022.15 = 81,999,021.70 : x - Step 2: Convert to fraction form
133,059,348.10/199,589,022.15 = 81,999,021.70/x - Step 3: Cross multiply
133,059,348.10x = 199,589,022.15 × 81,999,021.70 - Step 4: Simplify right side
133,059,348.10x = 16,366,104,558,359,632 - Step 5: Solve for x
x = 16,366,104,558,359,632/133,059,348.10 - Step 6: Final answer
x = 122,998,532.55
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1.5x scale
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.