Finding the Fourth Proportional to 115,153.45, 158,839.08 and 79,281.18
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Solution
The fourth proportional to 115,153.45, 158,839.08 and 79,281.18 is: 109,357.99
Step by Step Solution
- Step 1: Write the proportion equation
115,153.45 : 158,839.08 = 79,281.18 : x - Step 2: Convert to fraction form
115,153.45/158,839.08 = 79,281.18/x - Step 3: Cross multiply
115,153.45x = 158,839.08 × 79,281.18 - Step 4: Simplify right side
115,153.45x = 12,592,949,395.21 - Step 5: Solve for x
x = 12,592,949,395.21/115,153.45 - Step 6: Final answer
x = 109,357.99
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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.