Finding the Fourth Proportional to 129,110,400.80, 193,771,354.80 and 128,102,631.20
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Solution
The fourth proportional to 129,110,400.80, 193,771,354.80 and 128,102,631.20 is: 192,258,874.94
Step by Step Solution
- Step 1: Write the proportion equation
129,110,400.80 : 193,771,354.80 = 128,102,631.20 : x - Step 2: Convert to fraction form
129,110,400.80/193,771,354.80 = 128,102,631.20/x - Step 3: Cross multiply
129,110,400.80x = 193,771,354.80 × 128,102,631.20 - Step 4: Simplify right side
129,110,400.80x = 24,822,620,401,068,752 - Step 5: Solve for x
x = 24,822,620,401,068,752/129,110,400.80 - Step 6: Final answer
x = 192,258,874.94
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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.