Finding the Fourth Proportional to 102,074.53, 140,864.48 and 56,135.99
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Solution
The fourth proportional to 102,074.53, 140,864.48 and 56,135.99 is: 77,468.56
Step by Step Solution
- Step 1: Write the proportion equation
102,074.53 : 140,864.48 = 56,135.99 : x - Step 2: Convert to fraction form
102,074.53/140,864.48 = 56,135.99/x - Step 3: Cross multiply
102,074.53x = 140,864.48 × 56,135.99 - Step 4: Simplify right side
102,074.53x = 7,907,566,476.65 - Step 5: Solve for x
x = 7,907,566,476.65/102,074.53 - Step 6: Final answer
x = 77,468.56
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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.