Finding the Fourth Proportional to 106,508,902.20, 159,763,353.30 and 87,361,279.80
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Solution
The fourth proportional to 106,508,902.20, 159,763,353.30 and 87,361,279.80 is: 131,041,919.70
Step by Step Solution
- Step 1: Write the proportion equation
106,508,902.20 : 159,763,353.30 = 87,361,279.80 : x - Step 2: Convert to fraction form
106,508,902.20/159,763,353.30 = 87,361,279.80/x - Step 3: Cross multiply
106,508,902.20x = 159,763,353.30 × 87,361,279.80 - Step 4: Simplify right side
106,508,902.20x = 13,957,131,009,427,554 - Step 5: Solve for x
x = 13,957,131,009,427,554/106,508,902.20 - Step 6: Final answer
x = 131,041,919.70
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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.