Finding the Fourth Proportional to 118,119.87, 163,005.62 and 69,723.99
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Solution
The fourth proportional to 118,119.87, 163,005.62 and 69,723.99 is: 96,219.22
Step by Step Solution
- Step 1: Write the proportion equation
118,119.87 : 163,005.62 = 69,723.99 : x - Step 2: Convert to fraction form
118,119.87/163,005.62 = 69,723.99/x - Step 3: Cross multiply
118,119.87x = 163,005.62 × 69,723.99 - Step 4: Simplify right side
118,119.87x = 11,365,401,870.20 - Step 5: Solve for x
x = 11,365,401,870.20/118,119.87 - Step 6: Final answer
x = 96,219.22
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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.