Finding the Fourth Proportional to 129,929,423.48, 194,918,715.74 and 52,212,377.38
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Solution
The fourth proportional to 129,929,423.48, 194,918,715.74 and 52,212,377.38 is: 78,328,443.80
Step by Step Solution
- Step 1: Write the proportion equation
129,929,423.48 : 194,918,715.74 = 52,212,377.38 : x - Step 2: Convert to fraction form
129,929,423.48/194,918,715.74 = 52,212,377.38/x - Step 3: Cross multiply
129,929,423.48x = 194,918,715.74 × 52,212,377.38 - Step 4: Simplify right side
129,929,423.48x = 10,177,169,544,641,826 - Step 5: Solve for x
x = 10,177,169,544,641,826/129,929,423.48 - Step 6: Final answer
x = 78,328,443.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.