Finding the Fourth Proportional to 106,312.80, 159,238.80 and 87,880.80
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Solution
The fourth proportional to 106,312.80, 159,238.80 and 87,880.80 is: 131,630.75
Step by Step Solution
- Step 1: Write the proportion equation
106,312.80 : 159,238.80 = 87,880.80 : x - Step 2: Convert to fraction form
106,312.80/159,238.80 = 87,880.80/x - Step 3: Cross multiply
106,312.80x = 159,238.80 × 87,880.80 - Step 4: Simplify right side
106,312.80x = 13,994,033,135.04 - Step 5: Solve for x
x = 13,994,033,135.04/106,312.80 - Step 6: Final answer
x = 131,630.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.