Finding the Fourth Proportional to 139,787.54, 192,900.12 and 76,124.96
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Solution
The fourth proportional to 139,787.54, 192,900.12 and 76,124.96 is: 105,048.80
Step by Step Solution
- Step 1: Write the proportion equation
139,787.54 : 192,900.12 = 76,124.96 : x - Step 2: Convert to fraction form
139,787.54/192,900.12 = 76,124.96/x - Step 3: Cross multiply
139,787.54x = 192,900.12 × 76,124.96 - Step 4: Simplify right side
139,787.54x = 14,684,513,919.00 - Step 5: Solve for x
x = 14,684,513,919.00/139,787.54 - Step 6: Final answer
x = 105,048.80
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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.