Finding the Fourth Proportional to 103,620.05, 155,430.08 and 101,316.05
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Solution
The fourth proportional to 103,620.05, 155,430.08 and 101,316.05 is: 151,974.08
Step by Step Solution
- Step 1: Write the proportion equation
103,620.05 : 155,430.08 = 101,316.05 : x - Step 2: Convert to fraction form
103,620.05/155,430.08 = 101,316.05/x - Step 3: Cross multiply
103,620.05x = 155,430.08 × 101,316.05 - Step 4: Simplify right side
103,620.05x = 15,747,561,756.78 - Step 5: Solve for x
x = 15,747,561,756.78/103,620.05 - Step 6: Final answer
x = 151,974.08
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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.