Finding the Fourth Proportional to 111,278,590.24, 153,387,079.68 and 87,718,732.24
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Solution
The fourth proportional to 111,278,590.24, 153,387,079.68 and 87,718,732.24 is: 120,912,029.37
Step by Step Solution
- Step 1: Write the proportion equation
111,278,590.24 : 153,387,079.68 = 87,718,732.24 : x - Step 2: Convert to fraction form
111,278,590.24/153,387,079.68 = 87,718,732.24/x - Step 3: Cross multiply
111,278,590.24x = 153,387,079.68 × 87,718,732.24 - Step 4: Simplify right side
111,278,590.24x = 13,454,920,171,525,464 - Step 5: Solve for x
x = 13,454,920,171,525,464/111,278,590.24 - Step 6: Final answer
x = 120,912,029.37
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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.