Finding the Fourth Proportional to 138,248.84, 207,431.58 and 82,196.03
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Solution
The fourth proportional to 138,248.84, 207,431.58 and 82,196.03 is: 123,328.72
Step by Step Solution
- Step 1: Write the proportion equation
138,248.84 : 207,431.58 = 82,196.03 : x - Step 2: Convert to fraction form
138,248.84/207,431.58 = 82,196.03/x - Step 3: Cross multiply
138,248.84x = 207,431.58 × 82,196.03 - Step 4: Simplify right side
138,248.84x = 17,050,052,372.63 - Step 5: Solve for x
x = 17,050,052,372.63/138,248.84 - Step 6: Final answer
x = 123,328.72
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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.