Finding the Fourth Proportional to 136,605,738.79, 188,485,713.08 and 83,693,626.03
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Solution
The fourth proportional to 136,605,738.79, 188,485,713.08 and 83,693,626.03 is: 115,478,697.47
Step by Step Solution
- Step 1: Write the proportion equation
136,605,738.79 : 188,485,713.08 = 83,693,626.03 : x - Step 2: Convert to fraction form
136,605,738.79/188,485,713.08 = 83,693,626.03/x - Step 3: Cross multiply
136,605,738.79x = 188,485,713.08 × 83,693,626.03 - Step 4: Simplify right side
136,605,738.79x = 15,775,052,782,096,930 - Step 5: Solve for x
x = 15,775,052,782,096,930/136,605,738.79 - Step 6: Final answer
x = 115,478,697.47
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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.