Finding the Fourth Proportional to 145,079.80, 217,619.70 and 125,639.80
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Solution
The fourth proportional to 145,079.80, 217,619.70 and 125,639.80 is: 188,459.70
Step by Step Solution
- Step 1: Write the proportion equation
145,079.80 : 217,619.70 = 125,639.80 : x - Step 2: Convert to fraction form
145,079.80/217,619.70 = 125,639.80/x - Step 3: Cross multiply
145,079.80x = 217,619.70 × 125,639.80 - Step 4: Simplify right side
145,079.80x = 27,341,695,584.06 - Step 5: Solve for x
x = 27,341,695,584.06/145,079.80 - Step 6: Final answer
x = 188,459.70
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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.