Finding the Fourth Proportional to 138,539.48, 207,809.21 and 63,722.55
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Solution
The fourth proportional to 138,539.48, 207,809.21 and 63,722.55 is: 95,583.82
Step by Step Solution
- Step 1: Write the proportion equation
138,539.48 : 207,809.21 = 63,722.55 : x - Step 2: Convert to fraction form
138,539.48/207,809.21 = 63,722.55/x - Step 3: Cross multiply
138,539.48x = 207,809.21 × 63,722.55 - Step 4: Simplify right side
138,539.48x = 13,242,132,695.03 - Step 5: Solve for x
x = 13,242,132,695.03/138,539.48 - Step 6: Final answer
x = 95,583.82
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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.