Finding the Fourth Proportional to 138,559.74, 207,320.57 and 98,670.88
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Solution
The fourth proportional to 138,559.74, 207,320.57 and 98,670.88 is: 147,636.70
Step by Step Solution
- Step 1: Write the proportion equation
138,559.74 : 207,320.57 = 98,670.88 : x - Step 2: Convert to fraction form
138,559.74/207,320.57 = 98,670.88/x - Step 3: Cross multiply
138,559.74x = 207,320.57 × 98,670.88 - Step 4: Simplify right side
138,559.74x = 20,456,503,084.00 - Step 5: Solve for x
x = 20,456,503,084.00/138,559.74 - Step 6: Final answer
x = 147,636.70
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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.