Finding the Fourth Proportional to 115,731,601.64, 159,709,398.18 and 66,172,905.98
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Solution
The fourth proportional to 115,731,601.64, 159,709,398.18 and 66,172,905.98 is: 91,318,488.99
Step by Step Solution
- Step 1: Write the proportion equation
115,731,601.64 : 159,709,398.18 = 66,172,905.98 : x - Step 2: Convert to fraction form
115,731,601.64/159,709,398.18 = 66,172,905.98/x - Step 3: Cross multiply
115,731,601.64x = 159,709,398.18 × 66,172,905.98 - Step 4: Simplify right side
115,731,601.64x = 10,568,434,989,887,524 - Step 5: Solve for x
x = 10,568,434,989,887,524/115,731,601.64 - Step 6: Final answer
x = 91,318,488.99
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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.