Finding the Fourth Proportional to 100,347.23, 138,485.57 and 66,295.98
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Solution
The fourth proportional to 100,347.23, 138,485.57 and 66,295.98 is: 91,492.68
Step by Step Solution
- Step 1: Write the proportion equation
100,347.23 : 138,485.57 = 66,295.98 : x - Step 2: Convert to fraction form
100,347.23/138,485.57 = 66,295.98/x - Step 3: Cross multiply
100,347.23x = 138,485.57 × 66,295.98 - Step 4: Simplify right side
100,347.23x = 9,181,036,225.43 - Step 5: Solve for x
x = 9,181,036,225.43/100,347.23 - Step 6: Final answer
x = 91,492.68
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.