Finding the Fourth Proportional to 139,409,631.80, 209,114,447.70 and 48,503,007.80
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Solution
The fourth proportional to 139,409,631.80, 209,114,447.70 and 48,503,007.80 is: 72,754,511.70
Step by Step Solution
- Step 1: Write the proportion equation
139,409,631.80 : 209,114,447.70 = 48,503,007.80 : x - Step 2: Convert to fraction form
139,409,631.80/209,114,447.70 = 48,503,007.80/x - Step 3: Cross multiply
139,409,631.80x = 209,114,447.70 × 48,503,007.80 - Step 4: Simplify right side
139,409,631.80x = 10,142,679,687,885,790 - Step 5: Solve for x
x = 10,142,679,687,885,790/139,409,631.80 - Step 6: Final answer
x = 72,754,511.70
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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.