Finding the Fourth Proportional to 129,446,929.40, 194,170,394.10 and 78,652,023.80
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Solution
The fourth proportional to 129,446,929.40, 194,170,394.10 and 78,652,023.80 is: 117,978,035.70
Step by Step Solution
- Step 1: Write the proportion equation
129,446,929.40 : 194,170,394.10 = 78,652,023.80 : x - Step 2: Convert to fraction form
129,446,929.40/194,170,394.10 = 78,652,023.80/x - Step 3: Cross multiply
129,446,929.40x = 194,170,394.10 × 78,652,023.80 - Step 4: Simplify right side
129,446,929.40x = 15,271,894,458,008,578 - Step 5: Solve for x
x = 15,271,894,458,008,578/129,446,929.40 - Step 6: Final answer
x = 117,978,035.70
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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.