Finding the Fourth Proportional to 129,031,794.40, 193,547,691.60 and 128,135,999.20
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Solution
The fourth proportional to 129,031,794.40, 193,547,691.60 and 128,135,999.20 is: 192,203,998.80
Step by Step Solution
- Step 1: Write the proportion equation
129,031,794.40 : 193,547,691.60 = 128,135,999.20 : x - Step 2: Convert to fraction form
129,031,794.40/193,547,691.60 = 128,135,999.20/x - Step 3: Cross multiply
129,031,794.40x = 193,547,691.60 × 128,135,999.20 - Step 4: Simplify right side
129,031,794.40x = 24,800,426,856,019,448 - Step 5: Solve for x
x = 24,800,426,856,019,448/129,031,794.40 - Step 6: Final answer
x = 192,203,998.80
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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.