Finding the Fourth Proportional to 161,720,857.70, 242,581,286.55 and 157,469,329.70
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Solution
The fourth proportional to 161,720,857.70, 242,581,286.55 and 157,469,329.70 is: 236,203,994.55
Step by Step Solution
- Step 1: Write the proportion equation
161,720,857.70 : 242,581,286.55 = 157,469,329.70 : x - Step 2: Convert to fraction form
161,720,857.70/242,581,286.55 = 157,469,329.70/x - Step 3: Cross multiply
161,720,857.70x = 242,581,286.55 × 157,469,329.70 - Step 4: Simplify right side
161,720,857.70x = 38,199,112,590,792,128 - Step 5: Solve for x
x = 38,199,112,590,792,128/161,720,857.70 - Step 6: Final answer
x = 236,203,994.55
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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.