Finding the Fourth Proportional to 115,976.68, 160,043.34 and 65,675.80
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Solution
The fourth proportional to 115,976.68, 160,043.34 and 65,675.80 is: 90,630.07
Step by Step Solution
- Step 1: Write the proportion equation
115,976.68 : 160,043.34 = 65,675.80 : x - Step 2: Convert to fraction form
115,976.68/160,043.34 = 65,675.80/x - Step 3: Cross multiply
115,976.68x = 160,043.34 × 65,675.80 - Step 4: Simplify right side
115,976.68x = 10,510,974,389.17 - Step 5: Solve for x
x = 10,510,974,389.17/115,976.68 - Step 6: Final answer
x = 90,630.07
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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.