Finding the Fourth Proportional to 102,647.80, 153,971.70 and 47,351.80
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Solution
The fourth proportional to 102,647.80, 153,971.70 and 47,351.80 is: 71,027.70
Step by Step Solution
- Step 1: Write the proportion equation
102,647.80 : 153,971.70 = 47,351.80 : x - Step 2: Convert to fraction form
102,647.80/153,971.70 = 47,351.80/x - Step 3: Cross multiply
102,647.80x = 153,971.70 × 47,351.80 - Step 4: Simplify right side
102,647.80x = 7,290,837,144.06 - Step 5: Solve for x
x = 7,290,837,144.06/102,647.80 - Step 6: Final answer
x = 71,027.70
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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.