Finding the Fourth Proportional to 145,092.99, 200,237.21 and 81,430.79
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Solution
The fourth proportional to 145,092.99, 200,237.21 and 81,430.79 is: 112,379.47
Step by Step Solution
- Step 1: Write the proportion equation
145,092.99 : 200,237.21 = 81,430.79 : x - Step 2: Convert to fraction form
145,092.99/200,237.21 = 81,430.79/x - Step 3: Cross multiply
145,092.99x = 200,237.21 × 81,430.79 - Step 4: Simplify right side
145,092.99x = 16,305,473,400.09 - Step 5: Solve for x
x = 16,305,473,400.09/145,092.99 - Step 6: Final answer
x = 112,379.47
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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.