Finding the Fourth Proportional to 189,438.48, 261,423.36 and 103,396.62
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Solution
The fourth proportional to 189,438.48, 261,423.36 and 103,396.62 is: 142,686.38
Step by Step Solution
- Step 1: Write the proportion equation
189,438.48 : 261,423.36 = 103,396.62 : x - Step 2: Convert to fraction form
189,438.48/261,423.36 = 103,396.62/x - Step 3: Cross multiply
189,438.48x = 261,423.36 × 103,396.62 - Step 4: Simplify right side
189,438.48x = 27,030,291,813.04 - Step 5: Solve for x
x = 27,030,291,813.04/189,438.48 - Step 6: Final answer
x = 142,686.38
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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.