Finding the Fourth Proportional to 168,502,406.20, 252,753,609.30 and 139,277,087.80
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Solution
The fourth proportional to 168,502,406.20, 252,753,609.30 and 139,277,087.80 is: 208,915,631.70
Step by Step Solution
- Step 1: Write the proportion equation
168,502,406.20 : 252,753,609.30 = 139,277,087.80 : x - Step 2: Convert to fraction form
168,502,406.20/252,753,609.30 = 139,277,087.80/x - Step 3: Cross multiply
168,502,406.20x = 252,753,609.30 × 139,277,087.80 - Step 4: Simplify right side
168,502,406.20x = 35,202,786,634,243,000 - Step 5: Solve for x
x = 35,202,786,634,243,000/168,502,406.20 - Step 6: Final answer
x = 208,915,631.70
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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.