Finding the Fourth Proportional to 139,721.24, 192,816.50 and 76,058.88
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Solution
The fourth proportional to 139,721.24, 192,816.50 and 76,058.88 is: 104,961.90
Step by Step Solution
- Step 1: Write the proportion equation
139,721.24 : 192,816.50 = 76,058.88 : x - Step 2: Convert to fraction form
139,721.24/192,816.50 = 76,058.88/x - Step 3: Cross multiply
139,721.24x = 192,816.50 × 76,058.88 - Step 4: Simplify right side
139,721.24x = 14,665,406,655.23 - Step 5: Solve for x
x = 14,665,406,655.23/139,721.24 - Step 6: Final answer
x = 104,961.90
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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.