Finding the Fourth Proportional to 154,882,890.12, 213,753,828.15 and 115,656,565.53
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Solution
The fourth proportional to 154,882,890.12, 213,753,828.15 and 115,656,565.53 is: 159,617,589.87
Step by Step Solution
- Step 1: Write the proportion equation
154,882,890.12 : 213,753,828.15 = 115,656,565.53 : x - Step 2: Convert to fraction form
154,882,890.12/213,753,828.15 = 115,656,565.53/x - Step 3: Cross multiply
154,882,890.12x = 213,753,828.15 × 115,656,565.53 - Step 4: Simplify right side
154,882,890.12x = 24,722,033,632,718,836 - Step 5: Solve for x
x = 24,722,033,632,718,836/154,882,890.12 - Step 6: Final answer
x = 159,617,589.87
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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.