Finding the Fourth Proportional to 126,138,721.80, 189,208,082.70 and 124,012,957.80
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Solution
The fourth proportional to 126,138,721.80, 189,208,082.70 and 124,012,957.80 is: 186,019,436.70
Step by Step Solution
- Step 1: Write the proportion equation
126,138,721.80 : 189,208,082.70 = 124,012,957.80 : x - Step 2: Convert to fraction form
126,138,721.80/189,208,082.70 = 124,012,957.80/x - Step 3: Cross multiply
126,138,721.80x = 189,208,082.70 × 124,012,957.80 - Step 4: Simplify right side
126,138,721.80x = 23,464,253,975,294,008 - Step 5: Solve for x
x = 23,464,253,975,294,008/126,138,721.80 - Step 6: Final answer
x = 186,019,436.70
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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.