Finding the Fourth Proportional to 139,313,378,391.84, 192,249,448,872.29 and 80,654,674,051.49
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Solution
The fourth proportional to 139,313,378,391.84, 192,249,448,872.29 and 80,654,674,051.49 is: 111,301,705,653.57
Step by Step Solution
- Step 1: Write the proportion equation
139,313,378,391.84 : 192,249,448,872.29 = 80,654,674,051.49 : x - Step 2: Convert to fraction form
139,313,378,391.84/192,249,448,872.29 = 80,654,674,051.49/x - Step 3: Cross multiply
139,313,378,391.84x = 192,249,448,872.29 × 80,654,674,051.49 - Step 4: Simplify right side
139,313,378,391.84x = 15,505,816,635,373,143,457,792 - Step 5: Solve for x
x = 15,505,816,635,373,143,457,792/139,313,378,391.84 - Step 6: Final answer
x = 111,301,705,653.57
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1.5x scale
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.