Finding the Fourth Proportional to 121,135,709.40, 181,703,564.10 and 48,363,721.80
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Solution
The fourth proportional to 121,135,709.40, 181,703,564.10 and 48,363,721.80 is: 72,545,582.70
Step by Step Solution
- Step 1: Write the proportion equation
121,135,709.40 : 181,703,564.10 = 48,363,721.80 : x - Step 2: Convert to fraction form
121,135,709.40/181,703,564.10 = 48,363,721.80/x - Step 3: Cross multiply
121,135,709.40x = 181,703,564.10 × 48,363,721.80 - Step 4: Simplify right side
121,135,709.40x = 8,787,860,624,200,867 - Step 5: Solve for x
x = 8,787,860,624,200,867/121,135,709.40 - Step 6: Final answer
x = 72,545,582.70
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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.