Finding the Fourth Proportional to 157,522,698.90, 217,384,804.28 and 86,958,141.97
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Solution
The fourth proportional to 157,522,698.90, 217,384,804.28 and 86,958,141.97 is: 120,004,156.89
Step by Step Solution
- Step 1: Write the proportion equation
157,522,698.90 : 217,384,804.28 = 86,958,141.97 : x - Step 2: Convert to fraction form
157,522,698.90/217,384,804.28 = 86,958,141.97/x - Step 3: Cross multiply
157,522,698.90x = 217,384,804.28 × 86,958,141.97 - Step 4: Simplify right side
157,522,698.90x = 18,903,378,672,700,904 - Step 5: Solve for x
x = 18,903,378,672,700,904/157,522,698.90 - Step 6: Final answer
x = 120,004,156.89
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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.