Finding the Fourth Proportional to 138,488.12, 207,916.68 and 93,660.08
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Solution
The fourth proportional to 138,488.12, 207,916.68 and 93,660.08 is: 140,614.90
Step by Step Solution
- Step 1: Write the proportion equation
138,488.12 : 207,916.68 = 93,660.08 : x - Step 2: Convert to fraction form
138,488.12/207,916.68 = 93,660.08/x - Step 3: Cross multiply
138,488.12x = 207,916.68 × 93,660.08 - Step 4: Simplify right side
138,488.12x = 19,473,492,882.13 - Step 5: Solve for x
x = 19,473,492,882.13/138,488.12 - Step 6: Final answer
x = 140,614.90
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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.