Finding the Fourth Proportional to 138,063.84, 207,136.08 and 54,970.08
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Solution
The fourth proportional to 138,063.84, 207,136.08 and 54,970.08 is: 82,471.17
Step by Step Solution
- Step 1: Write the proportion equation
138,063.84 : 207,136.08 = 54,970.08 : x - Step 2: Convert to fraction form
138,063.84/207,136.08 = 54,970.08/x - Step 3: Cross multiply
138,063.84x = 207,136.08 × 54,970.08 - Step 4: Simplify right side
138,063.84x = 11,386,286,888.49 - Step 5: Solve for x
x = 11,386,286,888.49/138,063.84 - Step 6: Final answer
x = 82,471.17
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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.