Finding the Fourth Proportional to 106,085,905.20, 159,128,857.80 and 80,576,737.20
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Solution
The fourth proportional to 106,085,905.20, 159,128,857.80 and 80,576,737.20 is: 120,865,105.80
Step by Step Solution
- Step 1: Write the proportion equation
106,085,905.20 : 159,128,857.80 = 80,576,737.20 : x - Step 2: Convert to fraction form
106,085,905.20/159,128,857.80 = 80,576,737.20/x - Step 3: Cross multiply
106,085,905.20x = 159,128,857.80 × 80,576,737.20 - Step 4: Simplify right side
106,085,905.20x = 12,822,084,155,886,772 - Step 5: Solve for x
x = 12,822,084,155,886,772/106,085,905.20 - Step 6: Final answer
x = 120,865,105.80
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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.