Finding the Fourth Proportional to 135,509.09, 187,008.97 and 81,792.98
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Solution
The fourth proportional to 135,509.09, 187,008.97 and 81,792.98 is: 112,878.19
Step by Step Solution
- Step 1: Write the proportion equation
135,509.09 : 187,008.97 = 81,792.98 : x - Step 2: Convert to fraction form
135,509.09/187,008.97 = 81,792.98/x - Step 3: Cross multiply
135,509.09x = 187,008.97 × 81,792.98 - Step 4: Simplify right side
135,509.09x = 15,296,020,943.03 - Step 5: Solve for x
x = 15,296,020,943.03/135,509.09 - Step 6: Final answer
x = 112,878.19
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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.