Finding the Fourth Proportional to 212,358.06, 318,647.76 and 86,091.63
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Solution
The fourth proportional to 212,358.06, 318,647.76 and 86,091.63 is: 129,182.31
Step by Step Solution
- Step 1: Write the proportion equation
212,358.06 : 318,647.76 = 86,091.63 : x - Step 2: Convert to fraction form
212,358.06/318,647.76 = 86,091.63/x - Step 3: Cross multiply
212,358.06x = 318,647.76 × 86,091.63 - Step 4: Simplify right side
212,358.06x = 27,432,905,054.25 - Step 5: Solve for x
x = 27,432,905,054.25/212,358.06 - Step 6: Final answer
x = 129,182.31
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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.