Finding the Fourth Proportional to 140,808,031.29, 194,314,770.86 and 78,082,578.99
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Solution
The fourth proportional to 140,808,031.29, 194,314,770.86 and 78,082,578.99 is: 107,753,785.81
Step by Step Solution
- Step 1: Write the proportion equation
140,808,031.29 : 194,314,770.86 = 78,082,578.99 : x - Step 2: Convert to fraction form
140,808,031.29/194,314,770.86 = 78,082,578.99/x - Step 3: Cross multiply
140,808,031.29x = 194,314,770.86 × 78,082,578.99 - Step 4: Simplify right side
140,808,031.29x = 15,172,598,444,209,286 - Step 5: Solve for x
x = 15,172,598,444,209,286/140,808,031.29 - Step 6: Final answer
x = 107,753,785.81
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.