Finding the Fourth Proportional to 112,972,129.20, 169,458,193.80 and 112,972,129.20
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Solution
The fourth proportional to 112,972,129.20, 169,458,193.80 and 112,972,129.20 is: 169,458,193.80
Step by Step Solution
- Step 1: Write the proportion equation
112,972,129.20 : 169,458,193.80 = 112,972,129.20 : x - Step 2: Convert to fraction form
112,972,129.20/169,458,193.80 = 112,972,129.20/x - Step 3: Cross multiply
112,972,129.20x = 169,458,193.80 × 112,972,129.20 - Step 4: Simplify right side
112,972,129.20x = 19,144,052,963,972,240 - Step 5: Solve for x
x = 19,144,052,963,972,240/112,972,129.20 - Step 6: Final answer
x = 169,458,193.80
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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.