Finding the Fourth Proportional to 161,991.37, 243,069.05 and 109,290.12
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Solution
The fourth proportional to 161,991.37, 243,069.05 and 109,290.12 is: 163,990.50
Step by Step Solution
- Step 1: Write the proportion equation
161,991.37 : 243,069.05 = 109,290.12 : x - Step 2: Convert to fraction form
161,991.37/243,069.05 = 109,290.12/x - Step 3: Cross multiply
161,991.37x = 243,069.05 × 109,290.12 - Step 4: Simplify right side
161,991.37x = 26,565,045,642.79 - Step 5: Solve for x
x = 26,565,045,642.79/161,991.37 - Step 6: Final answer
x = 163,990.50
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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.