Finding the Fourth Proportional to 115,435.80, 173,153.70 and 53,106.30
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Solution
The fourth proportional to 115,435.80, 173,153.70 and 53,106.30 is: 79,659.45
Step by Step Solution
- Step 1: Write the proportion equation
115,435.80 : 173,153.70 = 53,106.30 : x - Step 2: Convert to fraction form
115,435.80/173,153.70 = 53,106.30/x - Step 3: Cross multiply
115,435.80x = 173,153.70 × 53,106.30 - Step 4: Simplify right side
115,435.80x = 9,195,552,338.31 - Step 5: Solve for x
x = 9,195,552,338.31/115,435.80 - Step 6: Final answer
x = 79,659.45
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1.5x scale
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.