Finding the Fourth Proportional to 102,028.91, 140,839.13 and 68,024.99
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Solution
The fourth proportional to 102,028.91, 140,839.13 and 68,024.99 is: 93,900.65
Step by Step Solution
- Step 1: Write the proportion equation
102,028.91 : 140,839.13 = 68,024.99 : x - Step 2: Convert to fraction form
102,028.91/140,839.13 = 68,024.99/x - Step 3: Cross multiply
102,028.91x = 140,839.13 × 68,024.99 - Step 4: Simplify right side
102,028.91x = 9,580,580,421.83 - Step 5: Solve for x
x = 9,580,580,421.83/102,028.91 - Step 6: Final answer
x = 93,900.65
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1.5x scale
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.