Finding the Fourth Proportional to 139,416,211.05, 192,393,309.47 and 76,690,961.79
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Solution
The fourth proportional to 139,416,211.05, 192,393,309.47 and 76,690,961.79 is: 105,832,943.20
Step by Step Solution
- Step 1: Write the proportion equation
139,416,211.05 : 192,393,309.47 = 76,690,961.79 : x - Step 2: Convert to fraction form
139,416,211.05/192,393,309.47 = 76,690,961.79/x - Step 3: Cross multiply
139,416,211.05x = 192,393,309.47 × 76,690,961.79 - Step 4: Simplify right side
139,416,211.05x = 14,754,827,945,215,416 - Step 5: Solve for x
x = 14,754,827,945,215,416/139,416,211.05 - Step 6: Final answer
x = 105,832,943.20
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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.