Finding the Fourth Proportional to 103,649.20, 155,473.80 and 97,817.20
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Solution
The fourth proportional to 103,649.20, 155,473.80 and 97,817.20 is: 146,725.80
Step by Step Solution
- Step 1: Write the proportion equation
103,649.20 : 155,473.80 = 97,817.20 : x - Step 2: Convert to fraction form
103,649.20/155,473.80 = 97,817.20/x - Step 3: Cross multiply
103,649.20x = 155,473.80 × 97,817.20 - Step 4: Simplify right side
103,649.20x = 15,208,011,789.36 - Step 5: Solve for x
x = 15,208,011,789.36/103,649.20 - Step 6: Final answer
x = 146,725.80
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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.