Finding the Fourth Proportional to 139,555.25, 192,580.41 and 79,129.99
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Solution
The fourth proportional to 139,555.25, 192,580.41 and 79,129.99 is: 109,196.08
Step by Step Solution
- Step 1: Write the proportion equation
139,555.25 : 192,580.41 = 79,129.99 : x - Step 2: Convert to fraction form
139,555.25/192,580.41 = 79,129.99/x - Step 3: Cross multiply
139,555.25x = 192,580.41 × 79,129.99 - Step 4: Simplify right side
139,555.25x = 15,238,885,917.50 - Step 5: Solve for x
x = 15,238,885,917.50/139,555.25 - Step 6: Final answer
x = 109,196.08
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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.