Finding the Fourth Proportional to 203,129,019.69, 280,403,857.55 and 137,138,901.99
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Solution
The fourth proportional to 203,129,019.69, 280,403,857.55 and 137,138,901.99 is: 189,309,618.08
Step by Step Solution
- Step 1: Write the proportion equation
203,129,019.69 : 280,403,857.55 = 137,138,901.99 : x - Step 2: Convert to fraction form
203,129,019.69/280,403,857.55 = 137,138,901.99/x - Step 3: Cross multiply
203,129,019.69x = 280,403,857.55 × 137,138,901.99 - Step 4: Simplify right side
203,129,019.69x = 38,454,277,137,481,680 - Step 5: Solve for x
x = 38,454,277,137,481,680/203,129,019.69 - Step 6: Final answer
x = 189,309,618.08
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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.