Finding the Fourth Proportional to 136,721,267.28, 188,675,857.98 and 74,847,363.12
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Solution
The fourth proportional to 136,721,267.28, 188,675,857.98 and 74,847,363.12 is: 103,289,639.83
Step by Step Solution
- Step 1: Write the proportion equation
136,721,267.28 : 188,675,857.98 = 74,847,363.12 : x - Step 2: Convert to fraction form
136,721,267.28/188,675,857.98 = 74,847,363.12/x - Step 3: Cross multiply
136,721,267.28x = 188,675,857.98 × 74,847,363.12 - Step 4: Simplify right side
136,721,267.28x = 14,121,890,454,206,610 - Step 5: Solve for x
x = 14,121,890,454,206,610/136,721,267.28 - Step 6: Final answer
x = 103,289,639.83
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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.