Finding the Fourth Proportional to 103,471.40, 155,207.10 and 97,347.80
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Solution
The fourth proportional to 103,471.40, 155,207.10 and 97,347.80 is: 146,021.70
Step by Step Solution
- Step 1: Write the proportion equation
103,471.40 : 155,207.10 = 97,347.80 : x - Step 2: Convert to fraction form
103,471.40/155,207.10 = 97,347.80/x - Step 3: Cross multiply
103,471.40x = 155,207.10 × 97,347.80 - Step 4: Simplify right side
103,471.40x = 15,109,069,729.38 - Step 5: Solve for x
x = 15,109,069,729.38/103,471.40 - Step 6: Final answer
x = 146,021.70
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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.