Finding the Fourth Proportional to 151,471,338.81, 209,039,815.04 and 83,576,124.99
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Solution
The fourth proportional to 151,471,338.81, 209,039,815.04 and 83,576,124.99 is: 115,340,221.10
Step by Step Solution
- Step 1: Write the proportion equation
151,471,338.81 : 209,039,815.04 = 83,576,124.99 : x - Step 2: Convert to fraction form
151,471,338.81/209,039,815.04 = 83,576,124.99/x - Step 3: Cross multiply
151,471,338.81x = 209,039,815.04 × 83,576,124.99 - Step 4: Simplify right side
151,471,338.81x = 17,470,737,709,251,640 - Step 5: Solve for x
x = 17,470,737,709,251,640/151,471,338.81 - Step 6: Final answer
x = 115,340,221.10
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.