Finding the Fourth Proportional to 135,658.91, 186,993.59 and 106,931.99
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Solution
The fourth proportional to 135,658.91, 186,993.59 and 106,931.99 is: 147,396.11
Step by Step Solution
- Step 1: Write the proportion equation
135,658.91 : 186,993.59 = 106,931.99 : x - Step 2: Convert to fraction form
135,658.91/186,993.59 = 106,931.99/x - Step 3: Cross multiply
135,658.91x = 186,993.59 × 106,931.99 - Step 4: Simplify right side
135,658.91x = 19,995,595,226.32 - Step 5: Solve for x
x = 19,995,595,226.32/135,658.91 - Step 6: Final answer
x = 147,396.11
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.