Finding the Fourth Proportional to 137,786.85, 190,144.20 and 77,355.99
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Solution
The fourth proportional to 137,786.85, 190,144.20 and 77,355.99 is: 106,750.34
Step by Step Solution
- Step 1: Write the proportion equation
137,786.85 : 190,144.20 = 77,355.99 : x - Step 2: Convert to fraction form
137,786.85/190,144.20 = 77,355.99/x - Step 3: Cross multiply
137,786.85x = 190,144.20 × 77,355.99 - Step 4: Simplify right side
137,786.85x = 14,708,792,833.76 - Step 5: Solve for x
x = 14,708,792,833.76/137,786.85 - Step 6: Final answer
x = 106,750.34
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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.