Finding the Fourth Proportional to 161,723.21, 242,798.40 and 138,181.50
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Solution
The fourth proportional to 161,723.21, 242,798.40 and 138,181.50 is: 207,454.75
Step by Step Solution
- Step 1: Write the proportion equation
161,723.21 : 242,798.40 = 138,181.50 : x - Step 2: Convert to fraction form
161,723.21/242,798.40 = 138,181.50/x - Step 3: Cross multiply
161,723.21x = 242,798.40 × 138,181.50 - Step 4: Simplify right side
161,723.21x = 33,550,247,109.60 - Step 5: Solve for x
x = 33,550,247,109.60/161,723.21 - Step 6: Final answer
x = 207,454.75
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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.