Finding the Fourth Proportional to 139,784.18, 192,905.24 and 76,121.99
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Solution
The fourth proportional to 139,784.18, 192,905.24 and 76,121.99 is: 105,050.01
Step by Step Solution
- Step 1: Write the proportion equation
139,784.18 : 192,905.24 = 76,121.99 : x - Step 2: Convert to fraction form
139,784.18/192,905.24 = 76,121.99/x - Step 3: Cross multiply
139,784.18x = 192,905.24 × 76,121.99 - Step 4: Simplify right side
139,784.18x = 14,684,329,405.09 - Step 5: Solve for x
x = 14,684,329,405.09/139,784.18 - Step 6: Final answer
x = 105,050.01
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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.