Finding the Fourth Proportional to 186,780,387.80, 280,170,581.70 and 100,686,945.80
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Solution
The fourth proportional to 186,780,387.80, 280,170,581.70 and 100,686,945.80 is: 151,030,418.70
Step by Step Solution
- Step 1: Write the proportion equation
186,780,387.80 : 280,170,581.70 = 100,686,945.80 : x - Step 2: Convert to fraction form
186,780,387.80/280,170,581.70 = 100,686,945.80/x - Step 3: Cross multiply
186,780,387.80x = 280,170,581.70 × 100,686,945.80 - Step 4: Simplify right side
186,780,387.80x = 28,209,520,174,382,368 - Step 5: Solve for x
x = 28,209,520,174,382,368/186,780,387.80 - Step 6: Final answer
x = 151,030,418.70
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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.